fix: handle unimplemented file capabilities slightly more gracefully

[dyc3]

Summary

The HTML language currently doesn't implement some of the file capabilities that the playground expects. This makes it so that a language does not need to implement some of these capabilities in order to work in the playground, requiring less code changes. Ideally though, we would grab the file capabilities from biome instead of try/catching.

This doesn't make HTML fully functional in the playground -- other things in biome needs to be implemented first.

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[ematipico]

Ideally though, we would grab the file capabilities from biome instead of try/catching.

This is actually possible. The workspace provides a method for that

[dyc3]

Ah, then I will rework this to do that.

[dyc3]

It looks like the fileFeatures function doesn't currently indicate if the language supports parsing, control flow graph, or formatter ir.