feat(item): add styles for disabled state in ionic theme (#29583)

Issue number: internal

---------

## What is the new behavior?
- Added scss for the disabled state of `ion-item` for the Ionic theme
- Added disabled elements to test page

## Does this introduce a breaking change?
- [ ] Yes
- [x] No

---------

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

core/src/components/item/item.ionic.scss

@@ -91,9 +91,25 @@
   }
 }
 
+// Item: Disabled
+// --------------------------------------------------
+:host(.item-disabled) {
+  cursor: default;
+  pointer-events: none;
+
+  &::after {
+    @include globals.position(0, 0, 0, 0);
+
+    position: absolute;
+
+    background: #{globals.$ionic-state-disabled};
+
+    content: "";
+  }
+}
+
 // Item: Activated
 // --------------------------------------------------
-
 :host(.ion-activated) .item-native {
   background: var(--background-activated);
 }

core/src/components/item/test/disabled/item.e2e.ts

@@ -4,7 +4,7 @@ import { configs, test } from '@utils/test/playwright';
 /**
  * This behavior does not vary across directions
  */
-configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
+configs({ modes: ['ionic-md', 'md', 'ios'], directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
   test.describe(title('item: disabled state'), () => {
     test('should not have visual regressions', async ({ page }) => {
       await page.goto(`/src/components/item/test/disabled`, config);

core/src/components/item/test/theme-ionic/index.html

@@ -134,14 +134,6 @@
           </ion-label>
         </ion-item>
 
-        <ion-item>
-          <ion-label>
-            <h1>Heading</h1>
-            <p>Normal paragraph</p>
-          </ion-label>
-          <ion-button slot="end" fill="outline">Outline</ion-button>
-        </ion-item>
-
         <ion-item>
           <ion-label slot="start">Start</ion-label>
           <ion-label>
@@ -150,13 +142,23 @@
           </ion-label>
         </ion-item>
 
-        <ion-item>
+        <ion-text color="primary">
+          <h2>Disabled Item</h2>
+        </ion-text>
+
+        <ion-item disabled>
+          <ion-label>
+            <h1>Heading</h1>
+            <p>Normal paragraph</p>
+          </ion-label>
+        </ion-item>
+
+        <ion-item disabled>
           <ion-label slot="start">Start</ion-label>
           <ion-label>
             <h1>Heading</h1>
             <p>Normal paragraph</p>
           </ion-label>
-          <ion-button slot="end" fill="outline">Outline</ion-button>
         </ion-item>
         <ion-item-divider>
           <ion-label>Item activatable</ion-label>