fix(duplicateEvent): Open duplicate in sidebar not original

[JohannesGGE]

Fix: #4598

How to test:

1. Create an event
2. Open the event again in simplified editor
3. Duplicate event
4. Click "More" to show sidebar editor
5. Change something
6. Save Event

On main this leads to updating the original event.
In this PR a new event is created (with the copied and edited data)

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.41 🎉

Comparison is base (79b3bbf) 22.36% compared to head (3dfd7fa) 22.78%.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5348      +/-   ##
============================================
+ Coverage     22.36%   22.78%   +0.41%     
- Complexity      359      371      +12     
============================================
  Files           236      237       +1     
  Lines         11554    11636      +82     
  Branches       2250     2255       +5     
============================================
+ Hits           2584     2651      +67     
- Misses         8970     8985      +15     

Flag	Coverage Δ
javascript	13.98% <0.00%> (-0.02%)	⬇️
php	65.50% <ø> (+1.10%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...nents/Editor/Properties/PropertySelectMultiple.vue	0.00% <0.00%> (ø)
...Properties/PropertySelectMultipleColoredOption.vue	0.00% <0.00%> (ø)
src/mixins/EditorMixin.js	3.61% <0.00%> (-0.05%)	⬇️
src/views/EditSidebar.vue	0.00% <0.00%> (ø)
src/views/EditSimple.vue	0.00% <ø> (ø)

... and 6 files with indirect coverage changes

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[hamza221]

Tested