### 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
for (int i = 0; i < get_gutter_count(); i++) {
		if (get_gutter_name(i) == "main_gutter") {
			main_gutter = i;
			continue;
		}
		if (get_gutter_name(i) == "line_numbers") {
			line_number_gutter = i;
			continue;
		}
		if (get_gutter_name(i) == "fold_gutter") {
			fold_gutter = i;
			continue;
		}
	}
}
void CodeEdit::_update_delimiter_cache(int p_from_line, int p_to_line) {
	if (delimiters.size() == 0) {
		return;
	}
	int line_count = get_line_count();
	if (p_to_line == -1) {
		p_to_line = line_count;
	}
	int start_line = MIN(p_from_line, p_to_line);
	int end_line = MAX(p_from_line, p_to_line);
	
	if (start_line != end_line) {