refactor(modal): remove swipeToClose in favor of canDismiss (#26050)

BREAKING CHANGE:

- The `swipeToClose` property has been removed in favor of `canDismiss`.
- The `canDismiss` property now defaults to `true` and can no longer be set to `undefined`.

angular/src/directives/overlays/modal.ts

@@ -71,7 +71,6 @@ export declare interface IonModal extends Components.IonModal {
     'mode',
     'presentingElement',
     'showBackdrop',
-    'swipeToClose',
     'translucent',
     'trigger',
   ],
@@ -102,7 +101,6 @@ export declare interface IonModal extends Components.IonModal {
     'mode',
     'presentingElement',
     'showBackdrop',
-    'swipeToClose',
     'translucent',
     'trigger',
   ],