Closes #6685 enable previously unsupported add-ons when available

[Amejia481]

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Pull Request checklist

• Quality: This PR builds and passes detekt/ktlint checks (A pre-push hook is recommended)
• Tests: This PR includes thorough tests or an explanation of why it does not
• Changelog: This PR includes a changelog entry or does not need one
• Accessibility: The code in this PR follows accessibility best practices or does not include any user facing features

After merge

• Milestone: Make sure issues closed by this pull request are added to the milestone of the version currently in development.
• Breaking Changes: If this is a breaking change, please push a draft PR on Reference Browser to address the breaking issues.

[codecov]

Codecov Report

Merging #6693 into master will increase coverage by 0.02%.
The diff coverage is 90.00%.

@@             Coverage Diff              @@
##             master    #6693      +/-   ##
============================================
+ Coverage     77.68%   77.70%   +0.02%     
+ Complexity     4734     4641      -93     
============================================
  Files           629      615      -14     
  Lines         23108    22734     -374     
  Branches       3411     3342      -69     
============================================
- Hits          17952    17666     -286     
+ Misses         3747     3693      -54     
+ Partials       1409     1375      -34     

Impacted Files	Coverage Δ	Complexity Δ
...feature/addons/migration/SupportedAddonsChecker.kt	92.39% <83.33%> (-0.72%)	0.00 <0.00> (ø)
.../mozilla/components/feature/addons/AddonManager.kt	96.99% <100.00%> (+0.09%)	24.00 <2.00> (ø)
...nts/feature/customtabs/CustomTabIntentProcessor.kt
...ustomtabs/feature/CustomTabSessionTitleObserver.kt
...ture/customtabs/verify/DigitalAssetLinksHandler.kt
...a/components/feature/customtabs/CustomTabsFacts.kt
...onents/feature/customtabs/CustomTabConfigHelper.kt
...feature/customtabs/store/CustomTabsServiceStore.kt
...eature/customtabs/feature/OriginVerifierFeature.kt
...nents/feature/customtabs/CustomTabWindowFeature.kt
... and 6 more

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[csadilek]

🚑 ⭐

Two comments below :).

[Amejia481]

bors r=csadilek,psymoon

[bors]

Build succeeded:

• complete-push