refactor: remove custom I18N merging logic

[sissbruecker]

Description

Removes custom logic for merging I18N values from Flow components with web components defaults. That should now be covered by all web components having support for setting partial I18N objects.

Type of change

• Refactoring

[sissbruecker]

These tests were checking that the nested I18N structure was properly merged by the executeJs call that has now been removed. The equivalent would now be to check the internal __effectiveI18n property.

However, since the merging logic is part of the web component, I think it's better to remove this. The web components could use some better test coverage for partial I18n, but that's a separate issue.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[ugur-vaadin]

Should this also change similar logic in AppLayout and MultiSelectComboBox?

[sissbruecker]

Should this also change similar logic in AppLayout and MultiSelectComboBox?

Thanks, I missed those. Turns out the partial I18n mechanism was missing for MSCB, so I created a PR for this first: vaadin/web-components#10147

The tests for those components will also need to be changed as they make assertions on the i18n property. I'll have to think about whether ITs are still feasible or if they should be more basic unit tests instead.