Backport PR #24178 on branch v3.6.x (Fall back to Python-level Thread for GUI warning)#24183

timhoffm merged 1 commit intomatplotlib:v3.6.xmatplotlib/matplotlib:v3.6.xfrom

meeseeksmachine:auto-backport-of-pr-24178-on-v3.6.xmeeseeksmachine/matplotlib:auto-backport-of-pr-24178-on-v3.6.xCopy head branch name to clipboard