fix: remove React-Codegen dependency from podspec #946

Job	Run time
build (macos, legacy-module, cpp)	9m 41s
build (macos, fabric-view, kotlin-objc)	12m 42s
build (macos, legacy-module, kotlin-swift)	16m 55s
build (macos, legacy-module, kotlin-objc)	12m 33s
build (macos, legacy-view, kotlin-swift)	4m 13s
build (macos, legacy-view, kotlin-objc)	13m 47s
build (macos, nitro-module, kotlin-swift)	17m 29s
build (macos, turbo-module, cpp)	12m 17s
build (macos, turbo-module, kotlin-objc)	12m 2s
build (ubuntu, fabric-view, kotlin-objc)	5m 57s
build (ubuntu, legacy-module, cpp)	7m 55s
build (ubuntu, legacy-module, kotlin-swift)	2m 32s
build (ubuntu, legacy-module, kotlin-objc)	7m 13s
build (ubuntu, legacy-view, kotlin-swift)	2m 40s
build (ubuntu, library, js)	2m 43s
build (ubuntu, legacy-view, kotlin-objc)	6m 33s
build (ubuntu, nitro-module, kotlin-swift)	2m 35s
build (ubuntu, turbo-module, cpp)	6m 37s
build (ubuntu, turbo-module, kotlin-objc)	6m 41s
	2h 43m 5s

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