Fix edit resource on inspector when inside array or dictionary

[xefensor]

Fixes #91473 - First PR (first time using C++)

Fixes Inspector not opening Resource from inside Array or Dictionary when
clicking "Edit", by properly signaling resource_selected.

When clicking "Edit" on a Resource in the Inspector, the resource_selected
signal is emitted. This works correctly when the Resource is a standalone
exported property, and the signal reaches EditorInspector::_resource_selected.

However, when the Resource is stored inside an Array or Dictionary, the signal
was not reaching the EditorInspector, because it was blocked by the container
property (Array/Dictionary) in between.

This fix forwards the resource_selected signal from the nested Resource
through the container (Array or Dictionary), up to the Inspector, allowing it
to display the selected Resource as expected.

[SatLess]

Nice first PR and thanks for your contribution.

It seems your trying to merge your master branch into Godot's master. I'm not entirely certain, but I believe that's the reason why there's some branch conflict going on.
If needed, here's the usual workflow for the pull request: https://docs.godotengine.org/en/4.4/contributing/workflow/pr_workflow.html

[ajreckof]

Code looks good.

[KoBeWi]

If you use Resource as Dictionary key, it still can't be edited, despite showing Edit option (it does nothing).

[ajreckof]

as the key should not be editable I'm not sur it should show this context menu at all. Most likely it should show the context popup menu of the editorProperty of the value as there is in array. Normally this si not to edit the key but only to show the key and replace the label of the EditorProperty. I think this can be merged without this one working as it is very niche and most likely he won't stay. If the possibility to directly edit from the popup menu it can later be added to the popup menu at the same time as edit key is added (it would be possible even without that by editing key and then doing right click edit the same as for the value right now.

[Repiteo]

Thanks! Congratulations on your first merged contribution! 🎉