### 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)

next_line = get_caret_line(caret_idx);
			
			for (int j = i - 1; j >= 0; j--) {
				if (get_caret_line(caret_edit_order[j]) != get_caret_line(caret_idx)) {
					break;
				}
				carets_to_remove.push_back(caret_edit_order[j]);
			}
		} else if (p_word && get_caret_column(caret_idx) < curline_len - 1) {
			
			int line = get_caret_line(caret_idx);
			int column = get_caret_column(caret_idx);
			PackedInt32Array words = TS->shaped_text_get_word_breaks(text.get_line_data(line)->get_rid());
			for (int j = 1; j < words.size(); j = j + 2) {
				if (words[j] > column) {
					column = words[j];
					break;
				}
			}
			next_line = line;
			next_column = column;
			
			for (int j = i - 1; j >= 0; j--) {
				if (get_caret_line(caret_edit_order[j]) != get_caret_line(caret_idx)) {
					break;
				}
				if (get_caret_column(caret_edit_order[j]) > column) {
					break;
				}
				carets_to_remove.push_back(caret_edit_order[j]);