solver: prevent edge merge to inactive states #7476

Job	Run time
prepare	7s
archutil-arm64	0s
validate (lint-default)	12m 1s
validate (lint-gopls)	23m 17s
validate (lint-labs)	12m 4s
validate (lint-nydus)	12m 2s
validate (lint-proto)	21s
validate (lint-yaml)	28s
validate (validate-archutil)	36s
validate (validate-docs)	48s
validate (validate-doctoc)	27s
validate (validate-generated-files)	1m 21s
validate (validate-shfmt)	27s
validate (validate-vendor)	31s
	1h 4m 30s

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