fix(modal): body background is reset with inline card modals (#27835)

Issue number: resolves #27830

---------

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issue. -->

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## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

Card modals set the body background to `black` to match iOS. This color
should be removed once the final card modal has been closed. When modals
were updated to work inline, the code that removed the background color
was never updated to account for this. As a result, opening multiple
inline card modals never removes the background color because there are
always >1 modals in the DOM.

## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

- The card modal now queries for _visible_ modals in the DOM to
determine if it should remove the background color.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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and migration path for existing applications below. -->


## Other information

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

Dev-build: `7.2.1-dev.11689879279.14e28634`

core/src/components/modal/animations/ios.leave.ts

@@ -51,9 +51,9 @@ export const iosLeaveAnimation = (baseEl: HTMLElement, opts: ModalAnimationOptio
 
         presentingEl.style.setProperty('overflow', '');
 
-        const numModals = Array.from(bodyEl.querySelectorAll('ion-modal')).filter(
-          (m) => m.presentingElement !== undefined
-        ).length;
+        const numModals = (
+          Array.from(bodyEl.querySelectorAll('ion-modal:not(.overlay-hidden)')) as HTMLIonModalElement[]
+        ).filter((m) => m.presentingElement !== undefined).length;
         if (numModals <= 1) {
           bodyEl.style.setProperty('background-color', '');
         }