chore: use yarn v1 in extensions/core

framework/core/js/.yarnrc.yml

@@ -1,3 +0,0 @@
-nodeLinker: node-modules
-
-yarnPath: .yarn/releases/yarn-3.1.1.cjs

framework/core/js/package.json

@@ -48,6 +48,5 @@
         "post-build-typings": "find dist-typings -type f -name '*.d.ts' -print0 | xargs -0 sed -i 's,../src/@types,@types,g'",
         "check-typings": "tsc --noEmit --emitDeclarationOnly false",
         "check-typings-coverage": "typescript-coverage-report"
-    },
-    "packageManager": "yarn@3.1.1"
+    }
 }