feat(indent): add new undo block before indenting upon pressing esc

lua/neorg/modules/core/esupports/indent/module.lua

@@ -315,8 +315,17 @@ module.on_event = function(event)
 
         local indentkeys = "o,O,*<M-o>,*<M-O>"
             .. lib.when(module.config.public.format_on_enter, ",*<CR>", "")
-            .. lib.when(module.config.public.format_on_escape, ",*<Esc>", "")
         vim.api.nvim_buf_set_option(event.buffer, "indentkeys", indentkeys)
+
+        if module.config.public.format_on_escape then
+            vim.api.nvim_create_autocmd("InsertLeave", {
+                pattern = "*.norg",
+                callback = function(_ev)
+                    vim.bo.undolevels = vim.bo.undolevels
+                    vim.cmd("normal! ==")
+                end,
+            })
+        end
     end
 end