Issue with null-ls and dprint when formatting non-existent files

[leonasdev]

When using dprint with null-ls to format a file that does not yet exist, there is an issue where the content is not formatted properly. For example, if a new file (e.g. nvim test.ts) is created and some content is edited in it, then a textDocument/formatting request is sent to null-ls before saving the file, the content is not formatted. However, if the file is saved first (:w) and then the formatting request is sent, the content is formatted correctly.

see jose-elias-alvarez/null-ls.nvim#1516

[leonasdev]

see dprint/dprint#667