Make UWP FilePicker FutureAccessList more robust

[jfversluis]

Description of Change

When using FilePicker on UWP it will add the entries to something that is called the FutureAccessList. However, that list has a maximum amount of entries and when it reaches that, it will break. This change will add some more robustness.

This adds:

• Check if we're going over the limit with the picked files
• If yes; clean up the list starting with the oldest entries (assumed)
• Add the last n number of picked files back to the list, where n is the amount of files picked, or if that exceed the maximum of the FutureAccessList, it will take that maximum.
• Wraps this whole process in a try/catch so we don't break users apps when something goes wrong, its not that important.

Bugs Fixed

• Fixes [Bug] [UWP] App crashes when picking more than 1,000 files #2061
• Closes FilePicker in UWP now handles more than 1,000 files #2068

Behavioral Changes

Describe any non-bug related behavioral changes that may change how users app behaves when upgrading to this version of the codebase.

PR Checklist

• Has tests (if omitted, state reason in description)
• Has samples (if omitted, state reason in description)
• Rebased on top of main at time of PR
• Changes adhere to coding standard
• Updated documentation (see walkthrough)

[jfversluis]

@DanielGilbert are you still interested in this one? How does this look?

[DanielGilbert]

@DanielGilbert are you still interested in this one? How does this look?

Hi @jfversluis !

It's an improvement to the existing solution, thanks! Although I still stand by my comment, that a library should never interfere with the list. But it is how it is, I guess. :)

[jfversluis]

@DanielGilbert I totally agree. I guess the problem here is that it has been like this since forever and people might have come to rely on this happening now and so it will be a breaking change to remove it entirely. I think the actual impact will be limited, but better safe than sorry.

Thanks for all your input on this!