Show room encryption state in the composer

[stefanceriu]

• shows an encryption icon next to the composer
• changes the placeholder text base based on it
• converges on same placeholder for both composers

[github-actions]

	Warnings
⚠️	You seem to have made changes to views. Please consider adding screenshots.

Generated by 🚫 Danger Swift against 88d2d55

[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

Attention: Patch coverage is 97.87234% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.99%. Comparing base (5b2f6cf) to head (88d2d55).
Report is 4 commits behind head on develop.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...mScreen/ComposerToolbar/View/MessageComposer.swift	96.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3841   +/-   ##
========================================
  Coverage    78.98%   78.99%           
========================================
  Files          794      794           
  Lines        70190    70222   +32     
========================================
+ Hits         55442    55474   +32     
  Misses       14748    14748           

Flag	Coverage Δ
unittests	70.87% <97.87%> (-0.01%)	⬇️

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