Windows: Increase border size in undecorated shadow mode for better grip#4181

sout233 wants to merge 5 commits intorust-windowing:masterrust-windowing/winit:masterfrom

sout233:sout233/undecorated-shadow-border-improvementsout233/winit:sout233/undecorated-shadow-border-improvementCopy head branch name to clipboard