test: migrate form control usages to modern syntax (#28897)

Issue number: Internal

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## What is the current behavior?
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Several tests were still using the legacy form syntax.

## What is the new behavior?
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this PR. -->

- Migrated tests in `core`, `angular`, and `vue` to use the modern form
syntax (`react` did not have form controls).

I opted not to migrate `item/test/highlight` and `item/test/counter`
because those tests are going to be removed in the future once the
deprecate item APIs are removed.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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

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Co-authored-by: ionitron <hi@ionicframework.com>
Co-authored-by: Maria Hutt <thetaPC@users.noreply.github.com>

packages/vue/test/base/src/views/Select.vue

@@ -7,8 +7,8 @@
     </ion-header>
     <ion-content>
       <ion-item>
-        <ion-label>Select Popover</ion-label>
         <ion-select
+          label="Select Popover"
           id="select-popover"
           interface="popover"
           placeholder="Select fruit"
@@ -30,7 +30,6 @@ import {
   IonTitle,
   IonContent,
   IonItem,
-  IonLabel,
   IonSelect,
   IonSelectOption,
 } from "@ionic/vue";
@@ -44,7 +43,6 @@ export default defineComponent({
     IonTitle,
     IonContent,
     IonItem,
-    IonLabel,
     IonSelect,
     IonSelectOption,
   },