sync: update fluffychat-build.yaml from wavecat repo

.forgejo/workflows/fluffychat-build.yaml

@@ -16,15 +16,10 @@ jobs:
 
       - name: Checkout FluffyChat
         run: |
-          REF=${{ github.event.client_payload.ref || 'main' }}
+          REF=${{ github.event.client_payload.ref || 'v2.4.1' }}
           git clone --depth 1 --branch "${REF##refs/heads/}" \
             http://forgejo.tooling.svc.cluster.local:3000/ember/fluffychat.git .
 
-      - name: Patch Dockerfile
-        run: |
-          sed -i '/rustup component add rust-src/a RUN rustup target add wasm32-unknown-unknown --toolchain nightly-x86_64-unknown-linux-gnu' Dockerfile
-          sed -i '/prepare-web.sh/i RUN cargo install wasm-bindgen-cli --version 0.2.100' Dockerfile
-
       - name: Build container image
         run: |
           SHA=${{ github.event.client_payload.sha || 'latest' }}