Duplicate Synthetic Nodes in Content Assist on first thing is a cross reference rules

[cdietrich]

Given the grammar

entry Model:
    (definitions+=Definition | usages+=Usage)*;

Definition:
    'define' name=ID;

Usage:
   definition=[Definition:ID] '{' '}';

and sample model

define Aaaaa
A|

during content assist there will be two Usage nodes.
so

export class HelloWorldScopeProvider extends DefaultScopeProvider {
    override getScope(context: ReferenceInfo): Scope {
        console.log(context.container.$type, context.container.$container?.$type, context.container.$container?.$container?.$type )
        return super.getScope(context);
    }
}

will output

Usage Usage Model