fix(mappings): go back to using <ESC> to exit terminal mode

lua/core/mappings.lua

@@ -16,8 +16,17 @@ vim.keymap.set({ "n", "x" }, "<leader>p", '"+p')
 vim.keymap.set({ "n", "x" }, "<leader>P", '"+P')
 vim.keymap.set({ "n", "x" }, "<leader>+", ":call setreg('+', @\")<CR>")
 
--- Exit insert mode in terminal using <C-\>
-vim.keymap.set("t", "<C-\\>", "<C-\\><C-n>")
+-- Exit insert mode in terminal using <ESC>
+vim.keymap.set("t", "<Esc>", "<C-\\><C-n>")
+
+-- Feed ESC in terminal mode using <C-\>
+vim.keymap.set("t", "<C-\\>", function()
+    vim.api.nvim_feedkeys(
+        vim.api.nvim_replace_termcodes("<Esc>", true, false, true),
+        "n",
+        false
+    )
+end)
 
 -- Use :diffput/get instead of normal one to allow staging visual selection
 vim.keymap.set({ "n", "x" }, "<leader>dp", ":diffput<CR>")