Use fake_runtime_api to simplify node code #9004

Job	Run time
set-condition	8s
fmt	1m 11s
sequentialise	2s
tee-check	22m 36s
identity-build	2m 39s
omni-executor-check	0s
omni-executor-build	50s
parachain-build-dev	53m 59s
parachain-clippy	16m 40s
parachain-runtime-test	23m 12s
parachain-unit-test	8m 11s
litentry	24m 24s
lit-di-identity-test	19m 41s
paseo	23m 47s
lit-dr-vc-test	9m 35s
omni-test	1m 43s
lit-parentchain-nonce	7m 53s
${{ matrix.test_name }}	0s
lit-test-failed-parentchain-extrinsic	9m 35s
lit-omni-account-test	12m 38s
lit-native-request-vc-test	11m 54s
push-docker	0s
	4h 10m 38s

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