refactor!: remove <Esc> as the default toggle key

Author: kawre

lua/leetcode/config/template.lua

@@ -113,7 +113,7 @@ local M = {
     },
 
     keys = {
-        toggle = { "q", "<Esc>" }, ---@type string|string[]
+        toggle = { "q" }, ---@type string|string[]
         confirm = { "<CR>" }, ---@type string|string[]
 
         reset_testcases = "r", ---@type string