build

fix: don't return empty hover #4708

Job	Run time
compile (ubuntu-22.04, linux, linux-arm64)	1m 28s
compile (macos-latest, darwin, darwin-arm64)	2m 22s
compile (ubuntu-22.04, linux, linux-x64, alpine:latest, musl)	2m 24s
compile (ubuntu-22.04, linux, linux-x64)	4m 3s
compile (windows-latest, windows, win32-x64)	3m 25s
compile (windows-latest, windows, win32-ia32)	3m 14s
compile (macos-latest, darwin, darwin-x64)	1m 2s
	17m 58s

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