### 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)

}
	merge_overlapping_carets();
}
void TextEdit::_move_caret_to_line_end(bool p_select) {
	for (int i = 0; i < carets.size(); i++) {
		if (p_select) {
			_pre_shift_selection(i);
		} else {
			deselect(i);
		}
		
		Vector<String> rows = get_line_wrapped_text(get_caret_line(i));
		int wi = get_caret_wrap_index(i);
		int row_end_col = -1;
		for (int j = 0; j < wi + 1; j++) {
			row_end_col += rows[j].length();
		}
		if (wi == rows.size() - 1 || get_caret_column(i) == row_end_col) {
			set_caret_column(text[get_caret_line(i)].length(), i == 0, i);
		} else {
			set_caret_column(row_end_col, i == 0, i);
		}
		carets.write[i].last_fit_x = INT_MAX;
		if (p_select) {
			_post_shift_selection(i);
		}
	}
	merge_overlapping_carets();
}
void TextEdit::_move_caret_page_up(bool p_select) {