fix: do not allow to override cookie header #29926

Job	Run time
ubuntu-22.04 (chromium tip-of-tree)	16m 36s
ubuntu-22.04 (chromium - Node.js 18)	13m 36s
ubuntu-22.04 (firefox - Node.js 18)	27m 44s
ubuntu-22.04 (webkit - Node.js 18)	18m 33s
Installation Test ubuntu-latest	13m 38s
ubuntu-22.04 (chromium - Node.js 20)	13m 26s
Installation Test macos-latest	10m 51s
Installation Test windows-latest	22m 8s
ubuntu-22.04 (chromium - Node.js 22)	13m 19s
Test Runner (ubuntu-latest, 18, 1, 2)	34m 4s
Test Runner (ubuntu-latest, 18, 2, 2)	9m 38s
VSCode Extension	33m 55s
Test Runner (windows-latest, 18, 1, 2)	45m 52s
Test Runner (windows-latest, 18, 2, 2)	12m 51s
Web Components	3m 34s
Test Runner (macos-latest, 18, 1, 2)	27m 14s
Test Runner (macos-latest, 18, 2, 2)	6m 47s
Test Runner (ubuntu-latest, 20, 1, 2)	32m 32s
Test Runner (ubuntu-latest, 20, 2, 2)	7m 21s
Test Runner (ubuntu-latest, 22, 1, 2)	33m 29s
Test Runner (ubuntu-latest, 22, 2, 2)	7m 7s
	6h 44m 15s

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