### Godot version

4.0 Beta 11 to 13

### System information

Windows 10

### Issue description

When trying to upgrade from Beta 10 one of my projects would immediately crash when opening the editor, with no error in the console which also crashed. I managed to isolate it to this enum:

```
enum { # Directions, clockwise, powers of 100, each direction gets 2 digits, allowing 100 terrains
	CENTER = 01,
	NORTH = 0100, # -Z
	NORTH_EAST = 010000,
	EAST = 01000000, # +X
	SOUTH_EAST = 0100000000,
	SOUTH = 010000000000, # +Z
	SOUTH_WEST = 01000000000000,
	WEST = 0100000000000000, # -X
	NORTH_WEST = 010000000000000000,
	ALL = 010101010101010101,
	ALL_CORNERS = NORTH_EAST + SOUTH_EAST + SOUTH_WEST + NORTH_WEST,
}
```

With this last line causing the crash:
`ALL_CORNERS = NORTH_EAST + SOUTH_EAST + SOUTH_WEST + NORTH_WEST,`

This worked in all the betas I've used up to and including Beta 10


### Steps to reproduce

Copy and paste that enum into a script, and save. Simply having a script with this enum will cause the editor to crash, the script doesn't need to be used anywhere.

### Minimal reproduction project

N/A
return;
		}
		GDScriptParser::DataType base_type = p_subscript->base->get_datatype();
		bool valid = false;
		
		if (p_subscript->base->is_constant && !base_type.is_meta_type) {
			
			Variant value = p_subscript->base->reduced_value.get_named(p_subscript->attribute->name, valid);
			if (valid) {
				p_subscript->is_constant = true;
				p_subscript->reduced_value = value;
				result_type = type_from_variant(value, p_subscript);
			}
		} else if (base_type.is_variant() || !base_type.is_hard_type()) {
			valid = true;
			result_type.kind = GDScriptParser::DataType::VARIANT;
			mark_node_unsafe(p_subscript);
		} else {
			reduce_identifier_from_base(p_subscript->attribute, &base_type);
			GDScriptParser::DataType attr_type = p_subscript->attribute->get_datatype();
			if (attr_type.is_set()) {
				valid = true;
				result_type = attr_type;
				p_subscript->is_constant = p_subscript->attribute->is_constant;
				p_subscript->reduced_value = p_subscript->attribute->reduced_value;
			} else if (!base_type.is_meta_type || !base_type.is_constant) {
				valid = base_type.kind != GDScriptParser::DataType::BUILTIN;
#ifdef DEBUG_ENABLED
				if (valid) {
					parser->push_warning(p_subscript, GDScriptWarning::UNSAFE_PROPERTY_ACCESS, p_subscript->attribute->name, base_type.to_string());