build-presets.ini: add swift-testing for wasm_stdlib,macos

Author: MaxDesiatov

utils/build-presets.ini

@@ -3278,8 +3278,8 @@ swiftpm
 swift-driver
 swiftsyntax
 skip-test-swiftpm
-; swift-testing
-; swift-testing-macros
+swift-testing
+swift-testing-macros
 
 release
 build-ninja
@@ -3295,6 +3295,8 @@ install-llbuild
 install-swiftpm
 install-swift-driver
 install-swiftsyntax
+install-swift-testing
+install-swift-testing-macros
 install-wasmkit
 install-destdir=%(install_destdir)s
 #