fix(radio): persist checked state when items are updated in radio-group (#29457)

Issue number: resolves #29442

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## What is the current behavior?
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The state does not stay consistent when the data used to render the
radios are updated.

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

- The state updates after the component loads, this allows the value to
be set after the radio is rendered.

## 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. -->

Dev build: 8.1.1-dev.11714760012.1eab947e

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Co-authored-by: Sean Perkins <13732623+sean-perkins@users.noreply.github.com>

core/src/components/radio/radio.tsx

@@ -110,6 +110,18 @@ export class Radio implements ComponentInterface {
    */
   @Event() ionBlur!: EventEmitter<void>;
 
+  componentDidLoad() {
+    /**
+     * The value may be `undefined` if it
+     * gets set before the radio is
+     * rendered. This ensures that the radio
+     * is checked if the value matches. This
+     * happens most often when Angular is
+     * rendering the radio.
+     */
+    this.updateState();
+  }
+
   /** @internal */
   @Method()
   async setFocus(ev: globalThis.Event) {