feat(webview): add OpenAI Codex speed selector (#1076) #3656

Job	Run time
compile	2m 11s
check-translations	36s
knip	42s
invisible-chars	10s
platform-unit-test (windows-latest)	7m 45s
platform-unit-test (ubuntu-latest)	5m 17s
dependency-review	0s
	16m 41s

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