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 (beta)

• 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: 1992 KB (no changes) ✅

Moonbeam runtime: 2096 KB (-8 KB) ✅

Moonriver runtime: 2100 KB (-4 KB) ✅

Compared to latest release (runtime-3900)

Moonbase runtime: 1992 KB (-368 KB compared to latest release) ✅

Moonbeam runtime: 2096 KB (-384 KB compared to latest release) ✅

Moonriver runtime: 2100 KB (-380 KB compared to latest release) ✅

[github-actions]

Coverage Report

@@                           Coverage Diff                            @@
##           master   rq/remove-deprecated-check-inherents      +/-   ##
========================================================================
+ Coverage   74.46%                                 74.51%   +0.05%     
- Files         397                                    396       -1     
- Lines       96013                                  95981      -32     
========================================================================
+ Hits        71493                                  71519      +26     
- Misses      24520                                  24462      -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	94.52% (-0.06%)	🔽
/runtime/moonbeam/src/lib.rs	50.59% (+1.33%)	🔼
/runtime/moonbeam/tests/common/mod.rs	92.94% (-0.07%)	🔽
/runtime/moonriver/src/lib.rs	50.51% (+1.34%)	🔼
/runtime/moonriver/tests/common/mod.rs	94.19% (-0.05%)	🔽

Coverage generated Thu Oct 9 12:20:31 UTC 2025

[manuelmauro]

lgtm!

[RomarQ]

This chopsticks PR broke our chopsticks tests for the changes included in this PR. Looking into it