Closes #8544: Activity should be reused when opening intents from other apps

[rocketsroger]

Pull Request checklist

• Tests: This PR includes thorough tests or an explanation of why it does not
• Screenshots: This PR includes screenshots or GIFs of the changes made or an explanation of why it does not
• Accessibility: The code in this PR follows accessibility best practices or does not include any user facing features. In addition, it includes a screenshot of a successful accessibility scan to ensure no new defects are added to the product.

After merge

• Milestone: Make sure issues finished by this pull request are added to the milestone of the version currently in development.

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[codecov-io]

Codecov Report

Merging #8547 into master will increase coverage by 0.02%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##             master   #8547      +/-   ##
===========================================
+ Coverage     18.67%   18.7%   +0.02%     
  Complexity      464     464              
===========================================
  Files           319     319              
  Lines         12754   12756       +2     
  Branches       1680    1680              
===========================================
+ Hits           2382    2386       +4     
+ Misses        10170   10168       -2     
  Partials        202     202

Impacted Files	Coverage Δ	Complexity Δ
...a/org/mozilla/fenix/browser/BaseBrowserFragment.kt	0% <ø> (ø)	0 <0> (ø)	⬇️
...n/java/org/mozilla/fenix/IntentReceiverActivity.kt	0% <0%> (ø)	0 <0> (ø)	⬇️
...mponents/searchengine/FenixSearchEngineProvider.kt	56.52% <0%> (+4.34%)	10% <0%> (ø)	⬇️

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[pocmo]

PR looks good. But a test failed. Let's rerun.

[pocmo]

Or not, looks like you already rerun.

[rocketsroger]

Or not, looks like you already rerun.

Yes, but it was a "connection reset" issue last run. Let me take a look.

[rocketsroger]

Or not, looks like you already rerun.

Yes, but it was a "connection reset" issue last run. Let me take a look.

Failure doesn't look like its related to my change.