fix(cargo-fmt): use project toolchain (#470)

Author: ReenigneArcher

.github/workflows/__call-common-lint.yml

@@ -246,9 +246,19 @@ jobs:
 
       - name: Rust - setup toolchain
         if: always() && steps.run_cargo.outputs.found_cargo == 'true'
-        uses: dtolnay/rust-toolchain@stable
-        with:
-          components: rustfmt
+        env:
+          RUST_COMPONENTS: rustfmt
+        run: |
+          # If no toolchain file exists, set to stable
+          if [ ! -f "rust-toolchain.toml" ] && [ ! -f "rust-toolchain" ]; then
+            rustup default stable
+          fi
+
+          # Install components for the active toolchain
+          rustup component add ${RUST_COMPONENTS}
+
+          # Display current toolchain information
+          rustup show
 
       - name: Rust - cargo fmt
         if: always() && steps.run_cargo.outputs.found_cargo == 'true'