fix(modal): add expandToScroll property to ModalOptions (#30357)

Issue number: resolves #30356

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## What is the current behavior?
Cannot use expandToScroll property in ModalController.create

## What is the new behavior?
ExpandToScroll can be added without syntax problems

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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

@@ -25,6 +25,7 @@ export interface ModalOptions<T extends ComponentRef = ComponentRef> {
   backdropBreakpoint?: number;
   handle?: boolean;
   handleBehavior?: ModalHandleBehavior;
+  expandToScroll?: boolean;
 }
 
 export interface ModalAnimationOptions {