Deselect all metadata fields when switching between metadata schemas in registry

[alexandrevryghem]

References

• Fixes delete metadatafields from multiple metadataschema #2599

Description

MetadataSchemaComponent should always unslect all the checkboxes when switching to a different schema in the registry.

Instructions for Reviewers

List of changes in this PR:

• Deselect all the fields from the MetadataSchemaComponent when destroying the component, this is needed because they are stored in the ngrx store.

Checklist

• My PR is small in size (e.g. less than 1,000 lines of code, not including comments & specs/tests), or I have provided reasons as to why that's not possible.
• My PR passes ESLint validation using yarn lint
• My PR doesn't introduce circular dependencies (verified via yarn check-circ-deps)
• My PR includes TypeDoc comments for all new (or modified) public methods and classes. It also includes TypeDoc for large or complex private methods.
• My PR passes all specs/tests and includes new/updated specs or tests based on the Code Testing Guide.
• If my PR includes new libraries/dependencies (in package.json), I've made sure their licenses align with the DSpace BSD License based on the Licensing of Contributions documentation.
• If my PR includes new features or configurations, I've provided basic technical documentation in the PR itself.
• If my PR fixes an issue ticket, I've linked them together.

[alanorth]

Thanks, @alexandrevryghem! I tested this on DSpace 7.6.1 and it fixes the issue.

[dspace-bot]

Successfully created backport PR for dspace-7_x:

• [Port dspace-7_x] Deselect all metadata fields when switching between metadata schemas in registry #2659