fix(which-key): config option modes has been deprecated (ayamir#1326)

This is a follow-up fix for which-key's v3 rewrite. It simply restores the
behaviors to match v2's default, so there shouldn't be any explicit changes.

(Now the user can use which-key in visual/selection mode without the annoying
box that distracts attention, which is superb 🥳)

Signed-off-by: Jint-lzxy <50296129+Jint-lzxy@users.noreply.github.com>

lua/modules/configs/tool/which-key.lua

@@ -9,14 +9,8 @@ return function()
 	require("modules.utils").load_plugin("which-key", {
 		preset = "classic",
 		delay = vim.o.timeoutlen,
-		modes = {
-			n = true,
-			i = true,
-			x = false,
-			s = false,
-			o = false,
-			t = false,
-			c = false,
+		triggers = {
+			{ "<auto>", mode = "nixso" },
 		},
 		plugins = {
 			marks = true,