Closes https://github.com/zed-industries/zed/issues/28091
Off in language settings by default: ` "lsp_folding_ranges": "off",`,
when enabled, disables tree-sitter indent-based folding and enables
fetching of LSP ones instead.
Falls back to tree-sitter if LSP-based one brings no results.
Release Notes:
- Added `textDocument/foldingRange` LSP support, use `
"lsp_folding_ranges": "on",` language settings to fetch and prefer the
LSP folds