### Godot version

v4.1.1.stable.official [bd6af8e0e]

### System information

v4.1.1.stable.official [bd6af8e0e]

### Issue description

In-script documentation (`##`) for `signal` members is not appearing in the _Node_ tab as expected.  Other documentation appears to work correctly in the _Inspector_ tab.

Working example (exported variable):
![GodotDocumentationWorking](https://github.com/godotengine/godot/assets/13528480/ab9b19d4-c9f7-4658-8379-f2c2699310b8)

Non-working example (`signal`)
![GodotDocumentationNotWorking](https://github.com/godotengine/godot/assets/13528480/06824f6a-b135-4454-a06e-7c6feb34060b)

I have tried deselecting and reselecting the associated Node, changing between the tabs on the left pane, changing active scripts and even restarting Godot - nothing makes it work.  According to the [GScript Documentation on Documentation Comments](https://docs.godotengine.org/en/stable/tutorials/scripting/gdscript/gdscript_documentation_comments.html), this **should** work, right?  Or is there something completely obvious that I am missing?


### Steps to reproduce

1. In Godot, create a new Node of type `Node`
2. Attach a new script to this Node, accepting all current defaults
3. In the script editor create a `signal` called `Foo` and right above it, create a `##` comment for it
4. Also create an `@export`ed integer variable called `Bar` and also create a `##` comment for it
5. Unselect and reselect the Node in the _Scene_ tab to refresh the _Inspector_ and _Node_ tabs
6. Hover over the variable in the _Inspector_ tab and see that the added description is shown correctly
7. Hover over the signal in the _Node_ tab and see that the added description is **not** shown and "_No description._" is shown instead

This is an example of the script that could be added:
```
## This is signal foo!
signal Foo

## This is exported signal bar!
@export var Bar : int = 0
```

### Minimal reproduction project

N/A
memdelete(cdbinds);
}
Control *ConnectionsDockTree::make_custom_tooltip(const String &p_text) const {
	EditorHelpBit *help_bit = memnew(EditorHelpBit);
	help_bit->get_rich_text()->set_custom_minimum_size(Size2(360 * EDSCALE, 1));
	
	
	
	PackedStringArray slices = p_text.split("::", false);
	if (slices.size() < 2) {
		
		help_bit->set_text(p_text);
		return help_bit;
	}
	String text = TTR("Signal:") + " [u][b]" + slices[0] + "[/b][/u]";
	text += slices[1].strip_edges() + "\n";
	if (slices.size() > 2) {
		text += slices[2].strip_edges();
	} else {
		text += "[i]" + TTR("No description.") + "[/i]";
	}
	help_bit->set_text(text);
	return help_bit;
}
struct _ConnectionsDockMethodInfoSort {
	_FORCE_INLINE_ bool operator()(const MethodInfo &a, const MethodInfo &b) const {