test(wm): don't rely on datadir for socket location

This commit avoids relying on DATA_DIR for the test socket location as
this path is not available to us in GitHub Actions runners.

.github/workflows/windows.yaml

@@ -55,8 +55,7 @@ jobs:
           key: ${{ matrix.platform.target }}
       - run: cargo +nightly fmt --check
       - run: cargo clippy
-      # sockets don't work properly on the windows runner
-      - run: cargo test -- --skip window_manager --skip process_command
+      - run: cargo test
       - uses: houseabsolute/actions-rust-cross@v1
         with:
           command: "build"