### 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
SIGNAL_CHECK_FALSE("text_set");
			
			ERR_PRINT_OFF;
			text_edit->swap_lines(-1, 0);
			CHECK(text_edit->get_text() == "swap\ntesting");
			SIGNAL_CHECK_FALSE("lines_edited_from");
			SIGNAL_CHECK_FALSE("caret_changed");
			SIGNAL_CHECK_FALSE("text_changed");
			SIGNAL_CHECK_FALSE("text_set");
			text_edit->swap_lines(0, -1);
			CHECK(text_edit->get_text() == "swap\ntesting");
			SIGNAL_CHECK_FALSE("lines_edited_from");
			SIGNAL_CHECK_FALSE("caret_changed");
			SIGNAL_CHECK_FALSE("text_changed");
			SIGNAL_CHECK_FALSE("text_set");
			text_edit->swap_lines(2, 0);
			CHECK(text_edit->get_text() == "swap\ntesting");
			SIGNAL_CHECK_FALSE("lines_edited_from");
			SIGNAL_CHECK_FALSE("caret_changed");
			SIGNAL_CHECK_FALSE("text_changed");
			SIGNAL_CHECK_FALSE("text_set");
			text_edit->swap_lines(0, 2);
			CHECK(text_edit->get_text() == "swap\ntesting");
			SIGNAL_CHECK_FALSE("lines_edited_from");
			SIGNAL_CHECK_FALSE("caret_changed");
			SIGNAL_CHECK_FALSE("text_changed");
			SIGNAL_CHECK_FALSE("text_set");
			ERR_PRINT_ON;
		}
		SUBCASE("[TextEdit] insert line at") {