Fix /createRoom and /invite containing displayname/avatarURL of inviter

[S7evinK]

Fixes #3324

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (be0c27e) 61.58% compared to head (38138e6) 64.60%.
Report is 1 commits behind head on main.

❗ Current head 38138e6 differs from pull request most recent head de14a9e. Consider uploading reports for the commit de14a9e to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3326      +/-   ##
==========================================
+ Coverage   61.58%   64.60%   +3.02%     
==========================================
  Files         518      518              
  Lines       58193    58194       +1     
==========================================
+ Hits        35836    37599    +1763     
+ Misses      18417    16678    -1739     
+ Partials     3940     3917      -23     

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