Replaced CustomStudyListener with FragmentResultApi in CustomStudyDialog

[Aditya13s]

Purpose / Description

Replace CustomStudyListener with the FragmentResultApi in CustomStudyDialog to improve fragment communication.

Fixes

• Fixes Custom study option raises an exception #17665

Approach

Replaces the CustomStudyListener functions with setFragmentResult to pass CustomStudyAction inside a bundle. The result is then listened inside DeckPicker using supportFragmentManager.setFragmentResultListener.

How Has This Been Tested?

Tested on Android 12

Checklist

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[Aditya13s]

@david-allison Kindly review and advise if any additional changes are required

[david-allison]

• define CustomStudyAction.fromOrdinal
• Extract the key to a constant
  • Consider extracting the bundle arg key to a constant
• 🐞 This doesn't handle all callers
• Remove the CustomStudyListener

[Aditya13s]

Remove the CustomStudyListener

@david-allison
CustomStudyListener Interface or only the val ?

[david-allison]

The interface, it should no longer be necessary if you're using the result API