Fix TextEdit read_only drawing.

[WhalesState]

• Fixes: TextEdit/LineEdit inconsistency when non-editable #97099

[kitbdev]

Looks good.

[WhalesState]

Screencast.From.2025-09-22.20-48-12.mp4

[kitbdev]

I think affecting all editor theme styleboxes is out of scope for this PR that was about the TextEdit readonly style. It was already approved too, I think these new changes would be better in a new PR to be reviewed separately.

[WhalesState]

Removed editor theme changes, also removed ceiling the margins which still fixes the text clipping issue but will report minimum size + 1 instead of -1 when left/right margin has values that can be rounded up.

[kitbdev]

also removed ceiling the margins which still fixes the text clipping issue but will report minimum size + 1 instead of -1 when editor scale is %50 or %150 which is fine for now.

This reverts #105870 so it reintroduces an issue and needs more consideration.
I think it should be a separate change so we can focus on allowing this PR to merge with just the read only change.

[WhalesState]

This reverts #105870 so it reintroduces an issue and needs more consideration. I think it should be a separate change so we can focus on allowing this PR to merge with just the read only change.

• Moved the fix here Fix StyleBox margins issues when stored with precision. #110791 since the last character clipping was a regression from [TextEdit] Fix margin rounding at sub 100% scale. #105870.

[kitbdev]

Moved the fix here #110791 since the last character clipping was a regression from #105870.

If the fix is moved to another PR, why is #105870 still being reverted here?
I tested and it reopens #105827

[WhalesState]

If the fix is moved to another PR, why is #105870 still being reverted here? I tested and it reopens #105827

Fixed by not reverting it in this PR, it should only close the linked issue now without causing any regressions.

[Repiteo]

Thanks!