fix(oxlint): don't attempt to find oxlint section in package.json

Problem:
The Oxlint LSP configuration checks `package.json` for an "oxlint"
section in its `root_dir` function. However, Oxlint has never supported
configuration via `package.json`.

Solution:
Specify ".oxlintrc.json" in a `root_markers` table instead.

Author: kmaglione

lsp/oxlint.lua

@@ -18,8 +18,6 @@
 --- can be used to fix all fixable diagnostics. See the `eslint` config entry for
 --- an example of how to use this to automatically fix all errors on write.
 
-local util = require 'lspconfig.util'
-
 local function oxlint_conf_mentions_typescript(root_dir)
   local fn = vim.fs.joinpath(root_dir, '.oxlintrc.json')
   for line in io.lines(fn) do
@@ -44,6 +42,7 @@ return {
     'svelte',
     'astro',
   },
+  root_markers = { '.oxlintrc.json' },
   workspace_required = true,
   on_attach = function(client, bufnr)
     vim.api.nvim_buf_create_user_command(bufnr, 'LspOxlintFixAll', function()
@@ -56,15 +55,6 @@ return {
       desc = 'Apply Oxlint automatic fixes',
     })
   end,
-  root_dir = function(bufnr, on_dir)
-    local fname = vim.api.nvim_buf_get_name(bufnr)
-
-    -- Oxlint resolves configuration by walking upward and using the nearest config file
-    -- to the file being processed. We therefore compute the root directory by locating
-    -- the closest `.oxlintrc.json` (or `package.json` fallback) above the buffer.
-    local root_markers = util.insert_package_json({ '.oxlintrc.json' }, 'oxlint', fname)[1]
-    on_dir(vim.fs.dirname(vim.fs.find(root_markers, { path = fname, upward = true })[1]))
-  end,
   settings = {
     -- run = 'onType',
     -- configPath = nil,