Issue number: Resolves#21320
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issue. -->
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## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->
`onDoubleClick` bindings on Ionic components do not fire when the
element is double clicked.
## What is the new behavior?
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this PR. -->
- `onDoubleClick` fires on Ionic components
- Fixed the unit testing set-up for the react test apps
## 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. -->
Issue number: resolves#27470
---------
<!-- Please do not submit updates to dependencies unless it fixes an
issue. -->
<!-- Please try to limit your pull request to one type (bugfix, feature,
etc). Submit multiple pull requests if needed. -->
## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->
Passing multiple elements in to an inline modal causes `.ion-page` to
not get set. This causes content to get pushed off the bottom of the
modal equal to the height of the header. React has some special CSS that
prevents this:
eb2772c0ce/packages/react/src/components/createInlineOverlayComponent.tsx (L137-L140)
However, I think this should be delegated to `.ion-page` instead so the
behavior is consistent across frameworks. For example, Angular uses
`.ion-page`:
eb2772c0ce/angular/src/directives/overlays/modal.ts (L82)
## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->
- Inline overlays in Ionic React and Ionic Vue wrap child content in
`.ion-delegate-host.ion-page`.
- Removed the custom flex styles from Ionic React as `.ion-page` has its
own styles.
## Does this introduce a breaking change?
- [ ] Yes
- [x] No
<!-- If this introduces a breaking change, please describe the impact
and migration path for existing applications below. -->
## Other information
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screenshots of how the component looks before and after the change. -->
Revised Design Doc:
https://github.com/ionic-team/ionic-framework-design-documents/pull/84
