Key added to the wrong action in Input Map

[pouleyKetchoupp]

Godot version:
Master 44a8824

OS/device including version:
Windows 10

Issue description:
When adding keys to multiple actions in a row in Input Map, the next key can be added to the same action as the previous one instead of the action that was selected.

Seems related to #44155 but I'm adding a separate issue since the repro is a bit different, to make sure this case gets fixed as well.

Steps to reproduce:

1. Open Project Settings in a new project
2. Go to Input Map tab
3. Click the + icon on ui_left action
4. Select Key
5. Press A
6. Click OK
7. Immediately press the + icon on ui_right action
8. Select Key
9. Press D
10. Click OK
11. Observe D key added to ui_left instead of ui_right

Minimal reproduction project:
n/a

[KoBeWi]

Seems no longer valid in 758bccf
@pouleyKetchoupp Can you confirm?

[pouleyKetchoupp]

Yes, I can confirm this is fixed with #44181, closing.