Wrap check messages routine into a helper function.

execute/report/report.go

@@ -418,8 +418,6 @@ func (b *execReportBuilder) verifyReport(
 // returns
 // 1. exec report for the builder
 // 2. updated commit report after marking new messages from the exec report as executed
-//
-//nolint:gocyclo // todo
 func (b *execReportBuilder) buildSingleChainReport(
 	ctx context.Context,
 	report exectypes.CommitData,