web debugging support for enhanced enums

[devoncarew]

See #47849 for the main tracking issue.

[devoncarew]

cc @annagrin

[sigmundch]

This is likely simply require adding a few tests for the debugger and expression evaluation. We expect the implementation to be entirely handled by the CFE lowering, though.

[annagrin]

The work required:

• adding tests for new expressions in expression evaluation tests,
• validating that completion of enums works in devtools

[Markzipan]

Update: tests added in e68c3e8

[sigmundch]

@Markzipan - I'm closing this assuming there is nothing more to do, but please reopen if I missed something.