### Godot version

4.0 dev_build

### System information

Ubuntu 22.04.1

### Issue description

The "Lookup Symbol" button don't appears for custorm class names.
Related issues: #68475,  #73167.
I tried apply #68311, #69473 and #73196. It don't helps.
The `Ctrl+LMB` works right for all cases.

### Steps to reproduce

Right click to the `CustomClassA` symbol in the `custom_class_b.gd` anywhere. The `Lookup Symbol` button don't appears in the context menu.

### Minimal reproduction project

Example from  #68475.
MAIN_GUTTER_BREAKPOINT = 0x01,
		MAIN_GUTTER_BOOKMARK = 0x02,
		MAIN_GUTTER_EXECUTING = 0x04
	};
	int main_gutter = -1;
	void _update_draw_main_gutter();
	void _main_gutter_draw_callback(int p_line, int p_gutter, const Rect2 &p_region);
	
	HashMap<int, bool> breakpointed_lines;
	bool draw_breakpoints = false;
	
	bool draw_bookmarks = false;
	
	bool draw_executing_lines = false;
	
	int line_number_gutter = -1;
	int line_number_digits = 1;
	String line_number_padding = " ";
	void _line_number_draw_callback(int p_line, int p_gutter, const Rect2 &p_region);
	
	int fold_gutter = -1;
	bool draw_fold_gutter = false;
	void _fold_gutter_draw_callback(int p_line, int p_gutter, Rect2 p_region);
	void _gutter_clicked(int p_line, int p_gutter);
	void _update_gutter_indexes();
	
	bool line_folding_enabled = false;
	
	enum DelimiterType {