Use swiftlang/github-workflows workflow for Wasm (#800)

Resolves #794 (comment)

Author: kkebo

.github/workflows/pull_request.yml

@@ -27,6 +27,8 @@ jobs:
       windows_exclude_swift_versions: "[{\"swift_version\": \"5.9\"}]"
       enable_macos_checks: true
       macos_exclude_xcode_versions: "[{\"xcode_version\": \"16.0\"}, {\"xcode_version\": \"16.1\"}]"
+      enable_wasm_sdk_build: true
+      wasm_sdk_build_command: swift build --target ArgumentParser
 
   cmake-build:
     name: CMake Build
@@ -51,25 +53,6 @@ jobs:
       - name: Build
         run: cmake --build .cmake-build
 
-  wasm-build:
-    name: Wasm Build
-    runs-on: ubuntu-latest
-    container:
-      image: swift:6.1-noble
-    steps:
-      - name: Checkout repo
-        uses: actions/checkout@v4
-      - name: Install Swift SDKs for WebAssembly
-        run: |
-          # TODO: We can replace these Swift SDKs with the swift.org one once it supports Foundation.
-          swift sdk install https://github.com/swiftwasm/swift/releases/download/swift-wasm-6.1-RELEASE/swift-wasm-6.1-RELEASE-wasm32-unknown-wasi.artifactbundle.zip --checksum 7550b4c77a55f4b637c376f5d192f297fe185607003a6212ad608276928db992
-          swift sdk install https://github.com/swiftwasm/swift/releases/download/swift-wasm-6.1-RELEASE/swift-wasm-6.1-RELEASE-wasm32-unknown-wasip1-threads.artifactbundle.zip --checksum 0dd273be28741f8e1eb00682c39bdc956361ed24b5572e183dd8a4e9d1c5f6ec
-          swift sdk list
-      - name: Build
-        run: |
-          swift build --swift-sdk wasm32-unknown-wasi --target ArgumentParser
-          swift build --swift-sdk wasm32-unknown-wasip1-threads --target ArgumentParser
-
   soundness:
     name: Soundness
     uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main