fix(scroll-assist): touch end events continue to bubble on inputs

[liamdebeasi]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Build (npm run build) was run locally and any changes were pushed
• Lint (npm run lint) has passed locally and any fixes were made for failures

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue URL: resolves #25229

There are two issues here:

1. The first time that you tap an ion-input, the touchend event never fires.
2. If you focus an input then quickly swipe to go back, the swipe to go back gesture can get stuck.

Both of these issues are happening because of the follow code: https://github.com/ionic-team/ionic-framework/blob/main/core/src/utils/input-shims/hacks/scroll-assist.ts#L30

stopPropagation prevents an event from bubbling. So when we call stopPropagation, the touchend event does not bubble up and the swipe gesture never completes. The gesture util listens for touchend to know when to fire the onEnd callback: https://github.com/ionic-team/ionic-framework/blob/main/core/src/utils/gesture/pointer-events.ts#L43

What is the new behavior?

• This PR removes the stopPropagation code to allow the touchend event to continue to bubble. This fixes both issues.

I fixed a similar issue in 2021 where the click event was being suppressed in the same area: f7d4c21

Does this introduce a breaking change?

• Yes
• No

Other information