### Godot version

4.0beta12

### System information

all

### Issue description

In `extension_api.json` we have some function that uses parameter typed after a global enum and display it as a bitfield:
```js
{
	"name": "set_button_mask",
	"is_const": false,
	"is_vararg": false,
	"is_static": false,
	"is_virtual": false,
	"hash": 3950145251,
	"arguments": [
		{
			"name": "mask",
			"type": "bitfield::MouseButtonMask" // bitfield prefix here !
		}
	]
},
```

However the global enum's own definition doesn't mention it is a bitfield:
```js
{
	"name": "MouseButtonMask",
	// No "bitfield" field here !
	"values": [
		{
			"name": "MOUSE_BUTTON_MASK_LEFT",
			"value": 1
		},
		{
			"name": "MOUSE_BUTTON_MASK_RIGHT",
			"value": 2
		},
		{
			"name": "MOUSE_BUTTON_MASK_MIDDLE",
			"value": 4
		},
		{
			"name": "MOUSE_BUTTON_MASK_MB_XBUTTON1",
			"value": 128
		},
		{
			"name": "MOUSE_BUTTON_MASK_MB_XBUTTON2",
			"value": 256
		}
	]
},
```

On the other hand, the non-global enums (i.e. the ones defined as part of a class) have this `is_bitfield` field.
So I guess we should add it to global enum too.

### Steps to reproduce

n/a

### Minimal reproduction project

n/a
d3["type"] = get_property_info_type_name(F.arguments[i]);
						arguments.push_back(d3);
					}
					if (arguments.size()) {
						d2["arguments"] = arguments;
					}
					signals.push_back(d2);
				}
				if (signals.size()) {
					d["signals"] = signals;
				}
			}
			{
				
				Array properties;
				List<PropertyInfo> property_list;
				ClassDB::get_property_list(class_name, &property_list, true);
				for (const PropertyInfo &F : property_list) {
					if (F.usage & PROPERTY_USAGE_CATEGORY || F.usage & PROPERTY_USAGE_GROUP || F.usage & PROPERTY_USAGE_SUBGROUP || (F.type == Variant::NIL && F.usage & PROPERTY_USAGE_ARRAY)) {
						continue; 
					}
					if (F.name.begins_with("_")) {
						continue; 
					}
					if (F.name.find("/") >= 0) {
						
						continue;
					}
					StringName property_name = F.name;
					Dictionary d2;