Fix UnboundLocalError in _border and document rgba() color format#9426

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veeceey wants to merge 2 commits intopython-pillow:mainfrom

veeceey:fix/border-validation-and-rgba-docs

Commits on Feb 10, 2026

Fix UnboundLocalError in _border for invalid tuple lengths and document rgba() color format

veeceey
and
claude
committed
Simplify test to use Image.new instead of opening file
veeceey
committed