check compatibility workflow builds all variants

Author: j-f1

.github/workflows/compatibility.yml

@@ -22,3 +22,6 @@ jobs:
           make bootstrap
           cd Example/JavaScriptKitExample
           swift build --triple wasm32-unknown-wasi
+          swift build --triple wasm32-unknown-wasi -Xswiftc -DJAVASCRIPTKIT_WITHOUT_WEAKREFS
+          swift build --triple wasm32-unknown-wasi -Xswiftc -DJAVASCRIPTKIT_WITHOUT_BIGINTS
+          swift build --triple wasm32-unknown-wasi -Xswiftc -DJAVASCRIPTKIT_WITHOUT_WEAKREFS -Xswiftc -DJAVASCRIPTKIT_WITHOUT_BIGINTS