fix setWithOthers test

[video_player_platform_interface] fix `setMixIWithOthers` test channel (

flutter-team-archive#2968)

Add README instructions for enablePendingPurchases (flutter-team-arch…

…ive#2921)

Add README instructions for enablePendingPurchases.

If a developer attempts to access this plugin on Android without invoking enablePendingPurchases, an exception is thrown.

Related StackOverflow post:
https://stackoverflow.com/questions/60046903/flutter-in-app-purchase-enablependingpurchases-enablependingpurchases-must

Updating documentation to use isEmpty check. (flutter-team-archive#2955)

The value returned is never null. This is already done correclty in the
example app.

Co-authored-by: Dan Field <dnfield@google.com>

[path_provider, video_player] Tweak pubspecs to pass bulk analysis. (f…

…lutter-team-archive#2959)

[android_intent] fix platform package dep (flutter-team-archive#2948)

[shared_preferences_linux] update `file` package dep version to be co…

…mpatible with framework (flutter-team-archive#2950)

[android_intent] fix platform package dep (flutter-team-archive#2948)

[android_intent] fix platform package dep (flutter-team-archive#2948)

[android_intent] fix platform package dep (flutter-team-archive#2948)