feat(package): `/p/demo/mux` support query strings #6765

Job	Run time
setup	4s
Run Main (gnogenesis) / Go Build / generated	11s
Run Main (gnogenesis) / Go Linter / lint	15s
Run Main (gnogenesis) / Go Test / test	29s
Run Main (gnodev) / Go Build / generated	13s
Run Main (gnodev) / Go Test / test	44s
Run Main (gnodev) / Go Linter / lint	29s
Run Main (gnofaucet) / Go Build / generated	9s
Run Main (gnofaucet) / Go Linter / lint	11s
Run Main (gnohealth) / Go Build / generated	11s
Run Main (gnofaucet) / Go Test / test	20s
Run Main (gnohealth) / Go Linter / lint	11s
Run Main (gnohealth) / Go Test / test	13s
Run Main (gnokeykc) / Go Build / generated	7s
Run Main (gnokeykc) / Go Linter / lint	19s
Run Main (gnokeykc) / Go Test / test	25s
Run Main (gnomd) / Go Build / generated	7s
Run Main (gnomd) / Go Linter / lint	27s
Run Main (gnomd) / Go Test / test	23s
Run Main (gnomigrate) / Go Build / generated	8s
Run Main (gnomigrate) / Go Linter / lint	16s
Run Main (gnomigrate) / Go Test / test	30s
	6m 22s

Provide feedback