Expression validation fails when using `component`

[olemartinorg]

In v4.21+ expression validation fails to check if a component is hidden when using component lookups to look up components inside repeating groups. This was caused by #3538 not properly refactoring ExpressionValidation to wrap things with DataModelLocationProvider before calling useExpressionDataSources(), thus lookups for which components are hidden failed to find the component inside the repeating group row.

Source: https://digdir-samarbeid.slack.com/archives/C02EJ9HKQA3/p1758525937863449