Replace deprecated CheckInherents with an equivalent ConsensusHook

[RomarQ]

What does it do?

Replaces deprecated CheckInherents with an equivalent ConsensusHook. (cumulus changes: paritytech/cumulus#2300)

Discussion in Polkadot-sdk: paritytech/polkadot-sdk#2841

CheckInherents was removed in paritytech/polkadot-sdk#9732

What important points should reviewers know?

[coderabbitai]

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✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch rq/remove-deprecated-check-inherents

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[github-actions]

WASM runtime size check:

Compared to target branch

Moonbase runtime: 2604 KB (-8 KB) ✅

Moonbeam runtime: 2756 KB (-20 KB) ✅

Moonriver runtime: 2772 KB (+4 KB) ⚠️

Compared to latest release (runtime-3900)

Moonbase runtime: 2604 KB (+244 KB compared to latest release) ⚠️

Moonbeam runtime: 2756 KB (+276 KB compared to latest release) ⚠️

Moonriver runtime: 2772 KB (+292 KB compared to latest release) ⚠️

[github-actions]

Coverage Report

@@                           Coverage Diff                            @@
##           master   rq/remove-deprecated-check-inherents      +/-   ##
========================================================================
+ Coverage   74.51%                                 74.57%   +0.06%     
- Files         392                                    391       -1     
- Lines       95801                                  95769      -32     
========================================================================
+ Hits        71385                                  71411      +26     
- Misses      24416                                  24358      -58     

Files Changed	Coverage
/node/service/src/lib.rs	55.49% (+0.37%)	🔼
/node/service/src/rpc.rs	85.06% (+1.73%)	🔼
/runtime/moonbase/src/lib.rs	57.20% (+1.69%)	🔼
/runtime/moonbase/tests/common/mod.rs	97.28% (-0.03%)	🔽
/runtime/moonbeam/src/lib.rs	50.51% (+1.34%)	🔼
/runtime/moonbeam/tests/common/mod.rs	94.28% (-0.05%)	🔽
/runtime/moonriver/src/lib.rs	50.42% (+1.33%)	🔼
/runtime/moonriver/tests/common/mod.rs	95.50% (-0.04%)	🔽

Coverage generated Tue Sep 23 20:24:04 UTC 2025