452130 452472 Fix paste format preference visually resetting
Fixes inconsistencies and crashes when selecting a paste format and pasting via drag&drop.
Test Plan
Build Krita. Drag&drop any image on an open document, select "paste as new layer". Check that in all cases the image is successfully pasted as a separate paint layer.
Formalities Checklist
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I confirmed this builds. -
I confirmed Krita ran and the relevant functions work. -
I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!) -
I made sure my commits build individually and have good descriptions as per KDE guidelines. -
I made sure my code conforms to the standards set in the HACKING file. -
I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy.