fix(lint): make neovim 0.11 typecheck happy (#1844)

lua/avante/ui/prompt_input.lua

@@ -18,6 +18,7 @@ local Utils = require("avante.utils")
 ---@field spinner_timer uv_timer_t | nil
 ---@field spinner_active boolean
 ---@field default_value string | nil
+---@field popup_hint_id integer | nil
 local PromptInput = {}
 PromptInput.__index = PromptInput
 
@@ -87,6 +88,7 @@ function PromptInput:new(opts)
   obj.spinner_index = 1
   obj.spinner_timer = nil
   obj.spinner_active = false
+  obj.popup_hint_id = vim.api.nvim_create_namespace("avante_prompt_input_hint")
   return obj
 end
 
@@ -184,7 +186,12 @@ function PromptInput:show_shortcuts_hints()
 
   local buf = api.nvim_create_buf(false, true)
   api.nvim_buf_set_lines(buf, 0, -1, false, { display_text })
-  vim.api.nvim_buf_add_highlight(buf, 0, "AvantePopupHint", 0, 0, -1)
+  api.nvim_buf_set_extmark(buf, self.popup_hint_id, 0, 0, {
+    end_row = 0,
+    end_col = #display_text,
+    hl_group = "AvantePopupHint",
+    priority = 100,
+  })
 
   local width = fn.strdisplaywidth(display_text)
 
@@ -208,6 +215,7 @@ end
 function PromptInput:close_shortcuts_hints()
   if self.shortcuts_hints_winid and api.nvim_win_is_valid(self.shortcuts_hints_winid) then
     local buf = api.nvim_win_get_buf(self.shortcuts_hints_winid)
+    if self.popup_hint_id then api.nvim_buf_clear_namespace(buf, self.popup_hint_id, 0, -1) end
     api.nvim_win_close(self.shortcuts_hints_winid, true)
     api.nvim_buf_delete(buf, { force = true })
     self.shortcuts_hints_winid = nil