refactor(angular): remove angular 14 and 15 dependencies (#29169)

Issue number: Internal

---------

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## What is the current behavior?
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With Ionic 8 we are dropping Angular 14 and 15 support.

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

- This PR officially drops Angular 14 and 15 support.
Note: The work to do this was done a while ago, but this branch was
never merged into `feature-8.0`. The breaking change was already noted
in the breaking change guide, so this is not an additional breaking
change on top of what was already specified.


## Does this introduce a breaking change?

- [x] Yes
- [ ] No

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  2. Update the BREAKING.md file with the breaking change.
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## Other information

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screenshots of how the component looks before and after the change. -->

---------

Co-authored-by: Brandy Carney <brandyscarney@users.noreply.github.com>
Co-authored-by: Maria Hutt <thetaPC@users.noreply.github.com>
Co-authored-by: Amanda Johnston <90629384+amandaejohnston@users.noreply.github.com>

packages/angular/standalone/src/navigation/router-outlet.ts

@@ -46,9 +46,8 @@ export class IonRouterOutlet extends IonRouterOutletBase {
     router: Router,
     zone: NgZone,
     activatedRoute: ActivatedRoute,
-    outletContent: ViewContainerRef,
     @SkipSelf() @Optional() readonly parentOutlet?: IonRouterOutlet
   ) {
-    super(name, tabs, commonLocation, elementRef, router, zone, activatedRoute, outletContent, parentOutlet);
+    super(name, tabs, commonLocation, elementRef, router, zone, activatedRoute, parentOutlet);
   }
 }