### Godot version

4.0.2

### System information

Windows 11

### Issue description

Double clicking on `$MyNode` in the script editor will select the whole name including the "$".

But double clicking on `%MyNode` (unique name) will select the name but will not include the "%".

Dragging a node from the scene tree into the script editor brings up the property/method hint list, even though a "." has not been typed. Pressing enter appends "new()" even though this makes no sense as there is no period so it is just appending it directly to the node name: `$MyNodenew()`


### Steps to reproduce

Type `%MyNode` in a script and double click on it.

Type `@onready var x =` in a script, drag a node from the scene tree, then press enter.


### Minimal reproduction project

N/A
return symbol_lookup_on_click_enabled;
}
String CodeEdit::get_text_for_symbol_lookup() {
	Point2i mp = get_local_mouse_pos();
	Point2i pos = get_line_column_at_pos(mp, false);
	int line = pos.y;
	int col = pos.x;
	if (line == -1) {
		return String();
	}
	StringBuilder lookup_text;
	const int text_size = get_line_count();
	for (int i = 0; i < text_size; i++) {
		String line_text = get_line(i);
		if (i == line) {
			lookup_text += line_text.substr(0, col);
			
			lookup_text += String::chr(0xFFFF);
			lookup_text += line_text.substr(col, line_text.size());
		} else {
			lookup_text += line_text;
		}
		if (i != text_size - 1) {
			lookup_text += "\n";
		}
	}
	return lookup_text.as_string();
}
void CodeEdit::set_symbol_lookup_word_as_valid(bool p_valid) {