### Godot version

4.0 stable

### System information

Manjaro Linux, kernel 6.1.1-1-MANJARO, AMD Ryzen 5 3600, AMD RX 580

### Issue description

The `wrap_mode` property of the `TextEdit` node doesn't seem to really do anything. Setting it to `LINE_WRAPPING_BOUNDARY` simply means that there won't be an horizontal scrollbar if the text overshoots the boundary, instead of actually forcing the text to the next line so that it stays visible.

### Steps to reproduce

Create a TextEdit node and set its `wrap_mode` property to `LINE_WRAPPING_BOUNDARY`

### Minimal reproduction project

[WrapBugDemo.zip](https://github.com/godotengine/godot/files/10875969/WrapBugDemo.zip)

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);