Fix paste value not updated in dictionaries/arrays (reverted)

[ajreckof]

Fixes #75124

when a value of a Dictionarry/array was modified it would never call update_property as emit_changed was called with p_changing == true whatever the case.

Edit : forced the call directly to update_property when p_changing == false. This will update less and will make it work for new_item key and value which I didn't think of previously.
With this new approach #76795 is not fixed anymore

[akien-mga]

Does this risk causing too frequent updates when editing arrays and dictionaries?

[ajreckof]

I don't think it will cause too frequent updates but it will effectively call more updates then needed as it will call a full inspector rebuild of the edited property. What I mean is that instead of updating only the dictionnary/array editor it will update the full property of the edited object while the dictionary might only be a small part of it. I'll make an update so that it only calls update_property.

Edit : Re-checked and effectively it would have called way more frequent updates because most EditorProperty handles internally the update but than still calls emit_changed with false which triggers a second update.

[Calinou]

Tested locally (rebased against master a83eb16), it works.

[akien-mga]

Thanks!

[Sauermann]

This PR introduced the issue, that it is no longer possible to select a different entry-field by mouse-click after editing.
This behavior becomes visible, after #78578 gets fixed by #78591.
I would expect, that the second mouse-click in the video sets the focus to the y-entry-field.

BugClickNoFocus.mp4