update solochain to use #[runtime] #9217

Job	Run time
preflight / preflight	39s
check-runtime-migration (westend)	6m 29s
check-runtime-migration (rococo)	4m 27s
check-runtime-migration (asset-hub-westend)	4m 12s
check-runtime-migration (asset-hub-rococo)	5m 43s
check-runtime-migration (bridge-hub-westend)	3m 47s
check-runtime-migration (bridge-hub-rococo)	3m 47s
check-runtime-migration (contracts-rococo)	3m 58s
check-runtime-migration (collectives-westend)	3m 42s
check-runtime-migration (coretime-rococo)	3m 48s
All runtime migrations passed	1s
	40m 33s

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