feat(compiler): generate type parameters for generic type references (#14104)

modules/@angular/compiler/test/output/js_emitter_spec.ts

@@ -27,6 +27,7 @@ class SimpleJsImportGenerator implements ImportResolver {
     return importedUrlStr;
   }
   getImportAs(symbol: StaticSymbol): StaticSymbol { return null; }
+  getTypeArity(symbol: StaticSymbol): number /*|null*/ { return null; }
 }
 
 export function main() {