feat(all): add CustomEvents types to components that emit events (#23956)

resolves #22925

BREAKING CHANGE: The `RadioChangeEventDetail` interface has been removed in favor of `RadioGroupChangeEventDetail`.

core/src/components/refresher/readme.md

@@ -24,6 +24,26 @@ The iOS native `ion-refresher` relies on rubber band scrolling in order to work
 
 Using the MD native `ion-refresher` requires setting the `pullingIcon` property on `ion-refresher-content` to the value of one of the available spinners. See the [ion-spinner Documentation](../spinner#properties) for accepted values. `pullingIcon` defaults to the `circular` spinner on MD.
 
+## Interfaces
+
+### RefresherEventDetail
+
+```typescript
+interface RefresherEventDetail {
+  complete(): void;
+}
+```
+
+### RefresherCustomEvent
+
+While not required, this interface can be used in place of the `CustomEvent` interface for stronger typing with Ionic events emitted from this component.
+
+```typescript
+interface RefresherCustomEvent extends CustomEvent {
+  detail: RefresherEventDetail;
+  target: HTMLIonRefresherElement;
+}
+```
 
 <!-- Auto Generated Below -->
 

core/src/components/refresher/refresher-interface.ts

@@ -2,3 +2,8 @@
 export interface RefresherEventDetail {
   complete(): void;
 }
+
+export interface RefresherCustomEvent extends CustomEvent {
+  detail: RefresherEventDetail;
+  target: HTMLIonRefresherElement;
+}