Fix navigation in UserDefinedFunction

[beliakov-mb]

Solves #30557

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[beliakov-mb]

@dotnet-policy-service agree company="Mindbox Ltd"

[bricelam]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[maumar]

@beliakov-mb product changes look good. Apologies for a very long delay and thank you for the contribution!