build

Merge pull request #3055 from tomlau10/fix/generic_class_completion #4508

Job	Run time
compile (ubuntu-22.04, linux, linux-x64, alpine:latest, musl)	2m 10s
compile (ubuntu-20.04, linux, linux-x64)	4m 54s
compile (ubuntu-20.04, linux, linux-arm64)	1m 23s
compile (macos-latest, darwin, darwin-x64)	1m 16s
compile (macos-latest, darwin, darwin-arm64)	2m 18s
compile (windows-latest, windows, win32-ia32)	3m 28s
compile (windows-latest, windows, win32-x64)	3m 8s
	18m 37s

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