feat(range): add label prop (#27408)

Issue number: N/A

---------

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issue. -->

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

Labels on `ion-range` can only be set via the `label` slot. When only
plain text is needed, this is cumbersome because you need to add an
entire new element to wrap the label.

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

Label prop added. If both the prop and slot are used, the prop will take
priority.

## 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. -->

- Docs PR: https://github.com/ionic-team/ionic-docs/pull/2955
- Dev build: `7.0.6-dev.11683657201.139d03f4`

angular/src/directives/proxies.ts

@@ -1619,14 +1619,14 @@ export declare interface IonRadioGroup extends Components.IonRadioGroup {
 
 
 @ProxyCmp({
-  inputs: ['activeBarStart', 'color', 'debounce', 'disabled', 'dualKnobs', 'labelPlacement', 'legacy', 'max', 'min', 'mode', 'name', 'pin', 'pinFormatter', 'snaps', 'step', 'ticks', 'value']
+  inputs: ['activeBarStart', 'color', 'debounce', 'disabled', 'dualKnobs', 'label', 'labelPlacement', 'legacy', 'max', 'min', 'mode', 'name', 'pin', 'pinFormatter', 'snaps', 'step', 'ticks', 'value']
 })
 @Component({
   selector: 'ion-range',
   changeDetection: ChangeDetectionStrategy.OnPush,
   template: '<ng-content></ng-content>',
   // eslint-disable-next-line @angular-eslint/no-inputs-metadata-property
-  inputs: ['activeBarStart', 'color', 'debounce', 'disabled', 'dualKnobs', 'labelPlacement', 'legacy', 'max', 'min', 'mode', 'name', 'pin', 'pinFormatter', 'snaps', 'step', 'ticks', 'value'],
+  inputs: ['activeBarStart', 'color', 'debounce', 'disabled', 'dualKnobs', 'label', 'labelPlacement', 'legacy', 'max', 'min', 'mode', 'name', 'pin', 'pinFormatter', 'snaps', 'step', 'ticks', 'value'],
 })
 export class IonRange {
   protected el: HTMLElement;