fix(extras/prettier): run "prettier" command in a shell

...instead of running it directly, which fails for installations where
"prettier" is a shell script (and not an executable)

lua/lazyvim/plugins/extras/formatting/prettier.lua

@@ -30,8 +30,14 @@ local supported = {
 --- Checks if a Prettier config file exists for the given context
 ---@param ctx ConformCtx
 function M.has_config(ctx)
-  vim.fn.system({ "prettier", "--find-config-path", ctx.filename })
-  return vim.v.shell_error == 0
+  local res = vim
+    .system({
+      vim.o.sh,
+      vim.o.shcf,
+      "prettier --find-config-path " .. vim.fn.shellescape(ctx.filename),
+    }, { text = true })
+    :wait()
+  return res.code == 0
 end
 
 --- Checks if a parser can be inferred for the given context:
@@ -45,7 +51,13 @@ function M.has_parser(ctx)
     return true
   end
   -- otherwise, check if a parser can be inferred
-  local ret = vim.fn.system({ "prettier", "--file-info", ctx.filename })
+  local ret = vim
+    .system({
+      vim.o.sh,
+      vim.o.shcf,
+      "prettier --file-info " .. vim.fn.shellescape(ctx.filename),
+    }, { text = true })
+    :wait().stdout
   ---@type boolean, string?
   local ok, parser = pcall(function()
     return vim.fn.json_decode(ret).inferredParser