### 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)

if (!setting_text && idle_detect->is_inside_tree()) {
		idle_detect->start();
	}
	String txt;
	if (undo_enabled) {
		_clear_redo();
		txt = _base_get_text(p_from_line, p_from_column, p_to_line, p_to_column);
	}
	_base_remove_text(p_from_line, p_from_column, p_to_line, p_to_column);
	if (!undo_enabled) {
		return;
	}
	
	TextOperation op;
	op.type = TextOperation::TYPE_REMOVE;
	op.from_line = p_from_line;