### Godot version

v4.0.beta.custom_build [13f0158]

### System information

Windows 10

### Issue description

When doing operations (`begin_complex_operation` and `end_complex_operation`) with multiple selections in TextEdit, some of these selections don't revert upon undo. This behavior is affects some of script editor's operations, like duplicate selection and delete lines.

### Steps to reproduce

Open script editor, make multiple selections. Keep in mind what you have selected. Do duplicate selection (ctrl+shift+D). Undo (ctrl+Z). Compare the result to what you remember.

### Minimal reproduction project

N/A
return;
			}
			if (k->is_action("ui_paste", true)) {
				paste();
				accept_event();
				return;
			}
			
			if (k->is_action("ui_undo", true)) {
				undo();
				accept_event();
				return;
			}
			if (k->is_action("ui_redo", true)) {
				redo();
				accept_event();
				return;
			}
			if (k->is_action("ui_text_caret_add_below", true)) {
				add_caret_at_carets(true);
				accept_event();
				return;
			}
			if (k->is_action("ui_text_caret_add_above", true)) {
				add_caret_at_carets(false);
				accept_event();
				return;
			}
		}