chore(vue3): migrate deprecated slot syntax

[st3iny]

Fix #5694

I tested all migrated components locally for visual regressions.

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (e6e8c2a) 24.41% compared to head (3d18fe1) 24.37%.
Report is 16 commits behind head on main.

Files	Patch %	Lines
...ppointmentConfigList/AppointmentConfigListItem.vue	0.00%	4 Missing ⚠️
...s/AppointmentConfigModal/NoEmailAddressWarning.vue	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5715      +/-   ##
============================================
- Coverage     24.41%   24.37%   -0.05%     
  Complexity      418      418              
============================================
  Files           243      243              
  Lines         10874    10892      +18     
  Branches       1790     1790              
============================================
  Hits           2655     2655              
- Misses         8219     8237      +18     

Flag	Coverage Δ
javascript	15.47% <0.00%> (-0.04%)	⬇️
php	61.63% <ø> (ø)

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