fix: types (#1344)

lua/avante/utils/root.lua

@@ -42,10 +42,11 @@ end
 
 ---@param patterns string[]|string
 function M.detectors.pattern(buf, patterns)
-  patterns = type(patterns) == "string" and { patterns } or patterns
+  local patterns_ = type(patterns) == "string" and { patterns } or patterns
+  ---@cast patterns_ string[]
   local path = M.bufpath(buf) or vim.uv.cwd()
   local pattern = vim.fs.find(function(name)
-    for _, p in ipairs(patterns) do
+    for _, p in ipairs(patterns_) do
       if name == p then return true end
       if p:sub(1, 1) == "*" and name:find(vim.pesc(p:sub(2)) .. "$") then return true end
     end