Tweak cell resize handles #15352

Job	Run time
Check unpinned dependencies	12s
Test Server	14s
Install everything with PNPM and cache it / Install everything with PNPM and cache it	2m 37s
Test Editor PR – Jest tests	10m 6s
Run BFF Tests	2m 11s
Deploy Branch Editor	4m 4s
Test Editor PR – TypeScript, ESLint, dependency-cruiser	7m 14s
Test Editor Shard 2 / Test Editor PR – Karma tests (Shard 2)	9m 58s
Test Editor Shard 1 / Test Editor PR – Karma tests (Shard 1)	10m 2s
Run System Tests	2m 41s
Run Collaboration Tests	2m 23s
Run Performance Tests	0s
	51m 42s

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