[Share] Use cleaner intent to remove top ChooserActivity

The original CL cause a regression for CCT, as sending intent to itself creates a new CCT session. Based on the original CL, adding an intent extra so when activities receive the new intent, it'll be dropped properly.

Recording: https://drive.google.com/file/d/1AZMhz-QWxQLuSZr8Tk-mFtGYK59aUzSL/view?usp=drive_link&resourcekey=0-ZffGjQClTpHLwlyLcp7mgw

(Description from original CL: crrev.com/c/4750566)

[Share] Remove TargetChosenReceiver when WindowAndroid destroyed

Android share sheet is showing with as ChooserActivity on top of Chrome. When theme switches, Chrome activity is recreated, so the previous stored custom actions should go away since they are referencing the old activity. As a result, the custom actions on the share sheet becomes no-op once selected.

This CL include the fix that:
* Remove the weak reference to Activity and WindowAndroid once it is removed from the UserDataHost (in WindowAndroid)
* Close the share sheet. This is done by sending an intent with Intent.FLAG_ACTIVITY_CLEAR_TOP targeting to the dispatching activity.

Bug: 1470978, 1470036
Change-Id: I6c9efb35f1e77c92e78bfbe6a3d8220419319e5d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4763472
Commit-Queue: Wenyu Fu <wenyufu@chromium.org>
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Reviewed-by: Theresa Sullivan <twellington@chromium.org>
Reviewed-by: Jinsuk Kim <jinsukkim@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1183495}

• chrome/android/java/src/org/chromium/chrome/browser/ChromeTabbedActivity.java[diff]
• chrome/android/java/src/org/chromium/chrome/browser/customtabs/BaseCustomTabActivity.java[diff]
• chrome/android/java/src/org/chromium/chrome/browser/init/AsyncInitializationActivity.java[diff]
• chrome/android/junit/src/org/chromium/chrome/browser/share/ShareHelperMultiInstanceUnitTest.java[diff]
• components/browser_ui/share/android/java/src/org/chromium/components/browser_ui/share/ShareHelper.java[diff]