[infra] Set up canary releases (#1865)

Author: michaldudak

.github/workflows/ci.yml

@@ -35,3 +35,6 @@ jobs:
       - run: pnpm install
       - run: pnpm release:build
       - run: pnpm validate-declarations
+      - name: Publish to pkg-pr-new
+        if: matrix.os == 'ubuntu-latest'
+        run: pnpm dlx pkg-pr-new publish './packages/react' --compact --pnpm