Option to disable PNG transparency

[Cris--]

Checklist

• I made sure that there are no existing issues - open or closed - to which I could contribute my information.
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• This issue contains only one feature request.
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Feature description

Hi,

on my Android phone with dark theme enabled png pictures with background transparency are hard to see. An optional option for png's with a choice of white or black background would be great.

Why do you want this feature?

Better viewing of png's with full background transparency..

Additional information

AOSP Android 14
Gallery v1.1.3