Only subscribe to identity updates if the room is encrypted.

[pixlwave]

Fixes #3409.

[github-actions]

	Warnings
⚠️	Some of the commits are missing ticket numbers. Please consider squashing all commits that don't have a tracking number.

Generated by 🚫 Danger Swift against 3aed992

[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 SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.72%. Comparing base (236d142) to head (3aed992).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3414   +/-   ##
========================================
  Coverage    77.72%   77.72%           
========================================
  Files          739      739           
  Lines        60207    60207           
========================================
  Hits         46798    46798           
  Misses       13409    13409           

Flag	Coverage Δ
unittests	69.12% <ø> (+0.04%)	⬆️

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