refactor(lua): use tuple syntax everywhere #29111

test/functional/plugin/lsp/completion_spec.lua

@@ -443,7 +443,7 @@ describe('vim.lsp.completion: protocol', function()
     end)
   end
 
-  --- @param pos { [1]: integer, [2]: integer }
+  --- @param pos [integer, integer]
   local function trigger_at_pos(pos)
     exec_lua(
       [[

test/functional/testnvim.lua

@@ -256,7 +256,7 @@ end
 --- @param notification_cb function?
 --- @param setup_cb function?
 --- @param timeout integer
---- @return {[1]: integer, [2]: string}
+--- @return [integer, string]
 function M.run_session(lsession, request_cb, notification_cb, setup_cb, timeout)
   local on_request --- @type function?
   local on_notification --- @type function?

test/functional/ui/screen.lua

@@ -438,7 +438,7 @@ end
 --- @field mouse_enabled? boolean
 ---
 --- @field win_viewport? table<integer,table<string,integer>>
---- @field float_pos? {[1]:integer,[2]:integer}
+--- @field float_pos? [integer,integer]
 --- @field hl_groups? table<string,integer>
 ---
 --- The following keys should be used to expect the state of various ext_