fix: fix race conditions from #14332

[julienrbrt]

Description

Closes: #14389

ref: #14332

We are already testing in TestManager_ExportGenesis, just adding one test case.

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[tac0turtle]

utACK.

cc @alpe for visibility

[tac0turtle]

any chance we could get a complex test case showing a module with the interface and one without and see how its handled

[sonarcloud]

[Cosmos SDK] Kudos, SonarCloud Quality Gate passed!   

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[julienrbrt]

any chance we could get a complex test case showing a module with the interface and one without and see how its handled

That is basically testing interface check of Go. Do you think it's really useful?