[PM-37190] Use state bridge instead of platform state

[quexten]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-37190
PR to resolve breaking changes on TS: bitwarden/clients#20976

📔 Objective

Migrates ephemeral KM state away from the repository access pattern, and only uses the state bridge, until platform provides a single-key-access-mechanism via settings.
This unblocks bitwarden/clients#20976 which migrates back from the temporary hack we had to introduce to fit into the shape of the platform API.

🚨 Breaking Changes

[github-actions]

🔍 SDK Breaking Change Detection

SDK Version: km/ephemeral-state-cleanup (8dcaede)

⚠️ If breaking changes are detected, a corresponding pull request addressing them must be ready for merge in the affected client repository.

Client	Status	Details
typescript	❌ Breaking changes detected	Compilation failed with new SDK version. A corresponding pull request addressing the breaking changes must be ready for merge in bitwarden/clients. - View Details
android	❌ Breaking changes detected	Compilation failed with new SDK version. A corresponding pull request addressing the breaking changes must be ready for merge in bitwarden/android. - View Details

---

Breaking change detection uses the build of the SDK from this branch, including any incompatibities pre-existing on or merged into this branch. Check the workflow logs to confirm.
Results update as workflows complete.

[codecov]

Codecov Report

❌ Patch coverage is 52.38095% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.12%. Comparing base (3a2a20c) to head (179633a).
⚠️ Report is 71 commits behind head on main.

Files with missing lines	Patch %	Lines
...arden-core/src/key_management/wasm_unlock_state.rs	52.38%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1155      +/-   ##
==========================================
+ Coverage   83.90%   84.12%   +0.22%     
==========================================
  Files         438      446       +8     
  Lines       57051    58790    +1739     
==========================================
+ Hits        47869    49460    +1591     
- Misses       9182     9330     +148     

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[mzieniukbw]

Android build is failing, I assume we won't merge it we get green light from mobile team ?

[quexten]

Please note this PR is blocked until mobile implements the state bridge and has a corresponding PR ready to update to this. It will not be merged until then.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud