[PM-36563] Send access event logs

[harr1424]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-36563

📔 Objective

This PR adds EventTypes, control flow, and test coverage to log Send access events.

Companion clients PR: bitwarden/clients#20740

[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

[codecov]

Codecov Report

❌ Patch coverage is 95.91837% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.09%. Comparing base (627da54) to head (2026fae).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/SendFeatures/Commands/NonAnonymousSendCommand.cs	92.30%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7679      +/-   ##
==========================================
+ Coverage   59.98%   60.09%   +0.11%     
==========================================
  Files        2133     2132       -1     
  Lines       93731    93934     +203     
  Branches     8311     8345      +34     
==========================================
+ Hits        56226    56454     +228     
+ Misses      35527    35490      -37     
- Partials     1978     1990      +12     

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