### 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;
		}
		
		int max_width = 0;
		for (i = 0; i < completion_options.size(); i++) {
			ScriptLanguage::CodeCompletionOption option;
			option.kind = (ScriptLanguage::CodeCompletionKind)(int)completion_options[i].get("kind");
			option.display = completion_options[i].get("display_text");
			option.insert_text = completion_options[i].get("insert_text");
			option.font_color = completion_options[i].get("font_color");
			option.icon = completion_options[i].get("icon");
			option.location = completion_options[i].get("location");
			option.default_value = completion_options[i].get("default_value");
			int offset = 0;
			if (option.default_value.get_type() == Variant::COLOR) {
				offset = line_height;
			}
			if (theme_cache.font.is_valid()) {
				max_width = MAX(max_width, theme_cache.font->get_string_size(option.display, HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.font_size).width + offset);
			}
			code_completion_options.push_back(option);
		}
		code_completion_longest_line = MIN(max_width, theme_cache.code_completion_max_width * theme_cache.font_size);
		code_completion_current_selected = 0;
		code_completion_force_item_center = -1;
		code_completion_active = true;
		queue_redraw();
		return;
	}
	const int caret_line = get_caret_line();