feat(radio-group): add helperText and errorText properties (#30222)

Issue number: N/A

---------

## What is the current behavior?
Radio group does not support helper and error text.

## What is the new behavior?
Adds support for helper and error text.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

## Other information

- [Supporting Text:
Preview](https://ionic-framework-git-rou-11554-ionic1.vercel.app/src/components/radio-group/test/supporting-text)

---------

Co-authored-by: Brandy Smith <6577830+brandyscarney@users.noreply.github.com>

packages/angular/common/src/directives/control-value-accessors/value-accessor.ts

@@ -52,6 +52,13 @@ export class ValueAccessor implements ControlValueAccessor, AfterViewInit, OnDes
     if (el === this.elementRef.nativeElement) {
       this.onTouched();
       setIonicClasses(this.elementRef);
+
+      // When ion-radio is blurred, el and this.elementRef.nativeElement are
+      // different so we need to check if the closest ion-radio-group is the same
+      // as this.elementRef.nativeElement and if so, we need to mark the radio group
+      // as touched
+    } else if (el.closest('ion-radio-group') === this.elementRef.nativeElement) {
+      this.onTouched();
     }
   }
 

packages/angular/src/directives/proxies.ts

@@ -1639,14 +1639,14 @@ export declare interface IonRadio extends Components.IonRadio {
 
 
 @ProxyCmp({
-  inputs: ['allowEmptySelection', 'compareWith', 'name', 'value']
+  inputs: ['allowEmptySelection', 'compareWith', 'errorText', 'helperText', 'name', 'value']
 })
 @Component({
   selector: 'ion-radio-group',
   changeDetection: ChangeDetectionStrategy.OnPush,
   template: '<ng-content></ng-content>',
   // eslint-disable-next-line @angular-eslint/no-inputs-metadata-property
-  inputs: ['allowEmptySelection', 'compareWith', 'name', 'value'],
+  inputs: ['allowEmptySelection', 'compareWith', 'errorText', 'helperText', 'name', 'value'],
 })
 export class IonRadioGroup {
   protected el: HTMLIonRadioGroupElement;

packages/angular/standalone/src/directives/radio-group.ts

@@ -16,7 +16,7 @@ import { defineCustomElement } from '@ionic/core/components/ion-radio-group.js';
 
 import { ProxyCmp, proxyOutputs } from './angular-component-lib/utils';
 
-const RADIO_GROUP_INPUTS = ['allowEmptySelection', 'compareWith', 'name', 'value'];
+const RADIO_GROUP_INPUTS = ['allowEmptySelection', 'compareWith', 'errorText', 'helperText', 'name', 'value'];
 
 /**
  * Pulling the provider into an object and using PURE  works