fix(angular): add focusTrap prop to modal and popover (#29729)

Issue number: resolves #29728

---------

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## What is the current behavior?
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The `focusTrap` property was missed when adding focus trapping
configuration to the modal and popover. This results in a type error
when developers attempt to assign to the property.

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

- Adds `focusTrap` property to `ion-modal` and `ion-popover` for the
angular component wrappers
- Resolves type warnings when using the property in angular

## 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: `8.2.6-dev.11721672792.195afb09`

Author: sean-perkins

packages/angular/common/src/overlays/modal.ts

@@ -60,6 +60,7 @@ const MODAL_INPUTS = [
   'cssClass',
   'enterAnimation',
   'event',
+  'focusTrap',
   'handle',
   'handleBehavior',
   'initialBreakpoint',

packages/angular/common/src/overlays/popover.ts

@@ -56,6 +56,7 @@ const POPOVER_INPUTS = [
   'dismissOnSelect',
   'enterAnimation',
   'event',
+  'focusTrap',
   'isOpen',
   'keyboardClose',
   'leaveAnimation',