### 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
carets.write[caret].selection.selecting_column = prev_col;
						caret_index_edit_dirty = true;
						merge_overlapping_carets();
						queue_redraw();
					} else {
						if (carets[caret].line < get_selection_line(caret) || (carets[caret].line == get_selection_line(caret) && carets[caret].column < get_selection_column(caret))) {
							if (carets[caret].selection.shiftclick_left) {
								carets.write[caret].selection.shiftclick_left = !carets[caret].selection.shiftclick_left;
							}
							carets.write[caret].selection.from_column = carets[caret].column;
							carets.write[caret].selection.from_line = carets[caret].line;
						} else if (carets[caret].line > get_selection_line(caret) || (carets[caret].line == get_selection_line(caret) && carets[caret].column > get_selection_column(caret))) {
							if (!carets[caret].selection.shiftclick_left) {
								SWAP(carets.write[caret].selection.from_column, carets.write[caret].selection.to_column);
								SWAP(carets.write[caret].selection.from_line, carets.write[caret].selection.to_line);
								carets.write[caret].selection.shiftclick_left = !carets[caret].selection.shiftclick_left;
							}
							carets.write[caret].selection.to_column = carets[caret].column;
							carets.write[caret].selection.to_line = carets[caret].line;
						} else {
							deselect(caret);
						}
						caret_index_edit_dirty = true;
						merge_overlapping_carets();
						queue_redraw();
					}
				} else if (drag_and_drop_selection_enabled && is_mouse_over_selection()) {
					set_selection_mode(SelectionMode::SELECTION_MODE_NONE, get_selection_line(caret), get_selection_column(caret), caret);
					
					set_caret_line(prev_line, false, true, 0, caret);