View-based Forms can no longer be instanciated with 2023.4.0

[pcdavid]

In 1d3e4f3#diff-67f9c31957f203241dd3af3eaf627223232eb55d8f44aba9fbe9526e2221d878L53 we modified the test to allow the creation of View-based representations, but did it in a way which assumes Diagrams are the only View-based representations that exist.
canHandle(IRepresentationDescription representationDescription) on a View-based form will always return false, which make them imppossible to instanciate.