Keep swiping blocked until AddRepeatDialog is closed

[grzesiek2010]

Closes #3897

What has been done to verify that this works as intended?

I was able to reproduce the issue so I also confirmed the fix works.

Why is this the best possible solution? Were any other approaches considered?

We released swiping to early and it was possible to swipe multiple times in a case when the AddRepeatDialog should appear and block it.

How does this change affect users? Describe intentional changes to behavior and behavior that could have accidentally been affected by code changes. In other words, what are the regression risks?

It's a pretty safe and isolated fix so we can just verify the mentioned scenario.

Do we need any specific form for testing your changes? If so, please attach one.

I used:
repeatGr.xlsx

Does this change require updates to documentation? If so, please file an issue here and include the link below.

No.

Before submitting this PR, please make sure you have:

• run ./gradlew checkAll and confirmed all checks still pass OR confirm CircleCI build passes and run ./gradlew connectedDebugAndroidTest locally.
• verified that any code or assets from external sources are properly credited in comments and/or in the about file.
• verified that any new UI elements use theme colors. UI Components Style guidelines

[mmarciniak90]

Tested with success

Verified on Androids: 6.0, 7.0, 8.1, 9.0

Verified cases:

• fill a new submission
• fill a previously saved submission
• horizontal/vertical device orientation
• rotation
• light/dark mode
• minimization
• a few other forms with repeat sections

[kkrawczyk123]

@grzesiek2010 I have noticed the same crash when following scenario:

1. Add group using + button
2. Swipe fast

I have used the same form that you have attached to pr.
see attached gif:

@getodk-bot unlabel "needs testing"

[grzesiek2010]

@kkrawczyk123 Nice catch try now.

[kkrawczyk123]

Confirmed that both issues have been fixed now.
Verified on Androids 5.1, 7.1 and 10.

@getodk-bot unlabel "needs testing"
@getodk-bot label "behavior verified"