fix: finish CallActivity and remove task when call is terminated (WPB-6437)

[ohassine]

WPB-6437 Move calling UIs to be displayed on a separate activity

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Issues

• When call is terminated, user can get back to the callActivity from recent tasks.
• We are killing the activity for incoming&outgoing call screen when minimizing the screen.

Solutions

• We need to finish callActivity and remove the task as well when call is ended.
• Minimize the screen by calling moveTaskToBack() instead finishing callActivity

Needs releases with:

• GitHub link to other pull request

Testing

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• I have added automated test to this contribution

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PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

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PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[AndroidBob]

Build 4578 succeeded.

The build produced the following APK's:

• com.wire.android-v4.7.0(9576258)(9576258)-staging-compat.apk

[github-actions]

Test Results

927 tests   927 ✅  14m 13s ⏱️
123 suites    0 💤
123 files      0 ❌

Results for commit 533da7f.

♻️ This comment has been updated with latest results.

[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!

[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!

[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!

[AndroidBob]

Build 4599 succeeded.

The build produced the following APK's:

• com.wire.android-v4.7.0(9577288)(9577288)-staging-compat.apk