test: Add validation for error handling in custom components and utility function #6634
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This pull request introduces a new test to validate error handling in custom components and adds a utility function to facilitate the addition of these components in tests.
New test for error handling in custom components:
src/frontend/tests/extended/features/validate-raise-errors-components.spec.ts: Added a test to ensure that users can see error messages on popups when an error is raised in a custom component. The test includes the creation of a custom component that raises aValueErrorwith a specific message.Utility function for adding custom components:
src/frontend/tests/utils/add-custom-component.ts: Added a utility functionaddCustomComponentto streamline the process of adding custom components in tests. This function repeatedly clicks the custom component button until the component is successfully added.