### 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)

for (int i = 0; i < carets.size(); i++) {
		
		if (p_select) {
			_pre_shift_selection(i);
		} else if (has_selection(i) && !p_move_by_word) {
			
			set_caret_line(get_selection_to_line(i), false, true, 0, i);
			set_caret_column(get_selection_to_column(i), i == 0, i);
			deselect(i);
			continue;
		} else {
			deselect(i);
		}
		if (p_move_by_word) {
			int cc = get_caret_column(i);
			
			if (cc == text[get_caret_line(i)].length() && get_caret_line(i) < text.size() - 1) {
				set_caret_line(get_caret_line(i) + 1, false, true, 0, i);
				set_caret_column(0, i == 0, i);
			} else {
				PackedInt32Array words = TS->shaped_text_get_word_breaks(text.get_line_data(get_caret_line(i))->get_rid());
				if (words.is_empty() || cc >= words[words.size() - 1]) {
					
					cc = text[get_caret_line(i)].length();
				} else {
					for (int j = 1; j < words.size(); j = j + 2) {