fix(select): text does not overlap icon (#27125)

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## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->


<!-- Issues are required for both bug fixes and features. -->
Issue URL: resolves #27081

When using stacked/floating labels the icon needs to be centered with
the entire component, not just the placeholder/selected text. As a
result, we set `position: absolute`. However, this causes the long
selected texts to overlap the icon. This is not happening with
non-stacked/floating labels because the icon is `position: relative` and
follows the normal document flow.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- Moved the icon sizes to sass variables
- Added code to set the .native-wrapper width to 100% minus the width of
the icon _and_ the additional margin that .select-icon adds

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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and migration path for existing applications below. -->


## Other information

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screenshots of how the component looks before and after the change. -->

---------

Co-authored-by: ionitron <hi@ionicframework.com>
Co-authored-by: Brandy Carney <brandyscarney@users.noreply.github.com>

core/src/components/select/select.ios.scss

@@ -28,10 +28,18 @@
 }
 
 .select-icon {
-  width: 18px;
-  height: 18px;
+  width: $select-ios-icon-size;
+  height: $select-ios-icon-size;
 
   // Color deviates from the iOS spec, but satisfies WCAG AAA:
   // https://www.w3.org/TR/WCAG20-TECHS/G18.html
   color: #{$text-color-step-350};
 }
+
+// Select Native Wrapper
+// ----------------------------------------------------------------
+
+:host(.select-label-placement-stacked) .native-wrapper,
+:host(.select-label-placement-floating) .native-wrapper {
+  width: calc(100% - $select-ios-icon-size - $select-icon-margin-start);
+}

core/src/components/select/select.ios.vars.scss

@@ -19,6 +19,9 @@ $select-ios-padding-start:          $item-ios-padding-start !default;
 /// @prop - Color of the select icon
 $select-ios-icon-color:             $text-color-step-650 !default;
 
+/// @prop - Size of the select icon
+$select-ios-icon-size: 18px !default;
+
 /// @prop - Color of the select placeholder
 $select-ios-placeholder-color:      $select-ios-icon-color !default;
 

core/src/components/select/select.md.scss

@@ -25,7 +25,7 @@
 }
 
 .select-icon {
-  width: 13px;
+  width: $select-md-icon-size;
 
   transition: transform .15s cubic-bezier(.4, 0, .2, 1);
 
@@ -142,3 +142,11 @@
 :host(.select-shape-round) {
   --border-radius: 16px;
 }
+
+// Select Native Wrapper
+// ----------------------------------------------------------------
+
+:host(.select-label-placement-stacked) .native-wrapper,
+:host(.select-label-placement-floating) .native-wrapper {
+  width: calc(100% - $select-md-icon-size - $select-icon-margin-start);
+}

core/src/components/select/select.md.vars.scss

@@ -19,6 +19,9 @@ $select-md-padding-start:       $item-md-padding-start !default;
 /// @prop - Color of the select icon
 $select-md-icon-color:          $text-color-step-600 !default;
 
+/// @prop - Size of the select icon
+$select-md-icon-size: 13px !default;
+
 /// @prop - Color of the select placeholder
 $select-md-placeholder-color:   $select-md-icon-color !default;
 

core/src/components/select/select.scss

@@ -125,7 +125,7 @@ button {
 // --------------------------------------------------
 
 .select-icon {
-  @include margin(0, 0, 0, 4px);
+  @include margin(0, 0, 0, $select-icon-margin-start);
 
   position: relative;
 }

core/src/components/select/select.vars.scss

@@ -2,3 +2,6 @@
 
 /// @prop - How much to scale the floating label by
 $select-floating-label-scale: 0.75 !default;
+
+/// @prop - Margin start of the select icon
+$select-icon-margin-start: 4px !default;

core/src/components/select/test/label/select.e2e.ts

@@ -168,17 +168,17 @@ test.describe('select: label', () => {
         `select-label-floating-expanded-${page.getSnapshotSettings()}.png`
       );
     });
-    test('long label should truncate', async ({ page }) => {
+    test('long text should truncate', async ({ page }) => {
       await page.setContent(`
         <ion-select label="Label Label Label Label Label Label Label Label Label Label Label Label Label Label Label" label-placement="floating" value="apples" placeholder="Select a Fruit">
-          <ion-select-option value="apples">Apples</ion-select-option>
+          <ion-select-option value="apples">Apples Apples Apples Apples Apples Apples Apples Apples</ion-select-option>
         </ion-select>
       `);
 
       const select = page.locator('ion-select');
 
       expect(await select.screenshot({ animations: 'disabled' })).toMatchSnapshot(
-        `select-label-floating-long-label-${page.getSnapshotSettings()}.png`
+        `select-label-floating-long-text-${page.getSnapshotSettings()}.png`
       );
     });
   });
@@ -219,17 +219,17 @@ test.describe('select: label', () => {
         `select-label-stacked-expanded-${page.getSnapshotSettings()}.png`
       );
     });
-    test('long label should truncate', async ({ page }) => {
+    test('long text should truncate', async ({ page }) => {
       await page.setContent(`
         <ion-select label="Label Label Label Label Label Label Label Label Label Label Label Label Label Label Label" label-placement="stacked" value="apples" placeholder="Select a Fruit">
-          <ion-select-option value="apples">Apples</ion-select-option>
+          <ion-select-option value="apples">Apples Apples Apples Apples Apples Apples Apples Apples</ion-select-option>
         </ion-select>
       `);
 
       const select = page.locator('ion-select');
 
       expect(await select.screenshot({ animations: 'disabled' })).toMatchSnapshot(
-        `select-label-stacked-long-label-${page.getSnapshotSettings()}.png`
+        `select-label-stacked-long-text-${page.getSnapshotSettings()}.png`
       );
     });
   });