Add support for Healthcheck.StartInterval (v1.44 API) #677

Job	Run time
integration tests (ubuntu)	26s
lint	16s
cross-compilation (GOOS=darwin, GOARCH=amd64)	16s
integration tests (windows)	10m 32s
cross-compilation (GOOS=darwin, GOARCH=arm64)	23s
tests (macos/go-1.21/amd64)	1m 4s
tests (ubuntu/go-1.21/386)	25s
cross-compilation (GOOS=freebsd, GOARCH=amd64)	22s
cross-compilation (GOOS=freebsd, GOARCH=arm64)	22s
tests (ubuntu/go-1.21/amd64)	50s
cross-compilation (GOOS=linux, GOARCH=amd64)	15s
tests (windows/go-1.21/386)	3m 21s
cross-compilation (GOOS=linux, GOARCH=arm64)	18s
tests (windows/go-1.21/amd64)	4m 7s
cross-compilation (GOOS=windows, GOARCH=amd64)	10s
tests (macos/go-1.22/amd64)	25s
tests (ubuntu/go-1.22/386)	29s
cross-compilation (GOOS=windows, GOARCH=arm64)	15s
tests (ubuntu/go-1.22/amd64)	29s
tests (windows/go-1.22/386)	1m 49s
tests (windows/go-1.22/amd64)	2m 44s
	29m 18s

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