fix: improve confidentiality wording when sharing calendars/events

[st3iny]

Fix #7591

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 12.96%. Comparing base (8a5909a) to head (d334ffd).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7602      +/-   ##
==========================================
- Coverage   12.99%   12.96%   -0.03%     
==========================================
  Files         224      225       +1     
  Lines       11661    11684      +23     
  Branches     2807     2828      +21     
==========================================
  Hits         1515     1515              
- Misses       9786     9807      +21     
- Partials      360      362       +2     

Flag	Coverage Δ
javascript	12.96% <ø> (-0.03%)	⬇️

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[st3iny]

/backport to stable6.0

[st3iny]

/backport to stable5.5