[stable4.4] Fix: replace NcMultiselect with NcSelect

[backportbot-nextcloud]

Backport of #5323

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (1a484c2) 13.93% compared to head (d58517b) 13.93%.

Additional details and impacted files

@@            Coverage Diff             @@
##           stable4.4    #5324   +/-   ##
==========================================
  Coverage      13.93%   13.93%           
==========================================
  Files            201      201           
  Lines           9607     9607           
  Branches        2171     2171           
==========================================
  Hits            1339     1339           
  Misses          8268     8268           

Flag	Coverage Δ
javascript	13.93% <ø> (ø)

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Impacted Files	Coverage Δ
.../AppNavigation/EditCalendarModal/SharingSearch.vue	0.00% <ø> (ø)
src/components/AppointmentConfigModal.vue	0.00% <ø> (ø)
...s/AppointmentConfigModal/CheckedDurationSelect.vue	0.00% <ø> (ø)
...rc/components/AppointmentConfigModal/TextInput.vue	0.00% <ø> (ø)
src/models/appointmentConfig.js	0.00% <ø> (ø)
src/store/settings.js	88.49% <ø> (ø)

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