feature request: prefer ["_"] over lsp fallback

[blyedev]

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Describe the feature

Prefer ["_"] filetype over lsp format.

Provide background

I want to configure prettier so it's the default formatter for everything unless a different formatter was configured. If prettier does not format a file I would like the lsp to.

Currently the lsp is preffered over the ["_"] filetype which i would consider to be counterintuitive.

What is the significance of this feature?

nice to have

Additional details

Obviously I could just configure prettier for every file but that feels pretty annoying and verbose for the config