Accept multiple mime types on file input

[jenthone]

Accept multiple mime types on file input

Platforms affected

Android

Motivation and Context

Accept multiple mime types when using file chooser

Description

Replace: #707
Fix: #695

Testing

Tested on Android devices.

Checklist

• [ x] I've run the tests to see all new and existing tests pass
• [ x] I added automated test coverage as appropriate for this change
• [ x] Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• [ x] If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• [ x] I've updated the documentation if necessary

[brodycj]

It looks like someone gave us a minimal reproduction in #695 (comment), needs our investigation.

[breautek]

Reproduced the original issue and confirmed that this PR resolves the issue: #695 (comment)

Confirmed that Intent.EXTRA_MIME_TYPES is usable by our min sdk.

lgtm 👍

Thank you for your contribution. I'd like to see a vote by at least one other PMC member before I merge.

[erisu]

Seems OK. Tested with various accept params