Don't use C++ modules with MSVC CI job (see hsutter#943)

Author: bluetarpmedia

regression-tests/run-tests.sh

@@ -163,6 +163,11 @@ for test_file in $tests; do
     if [[ $test_name == "pure2"* ]]; then
         descr="pure Cpp2 code"
         opt="-p"
+		# Disable C++ modules with MSVC due to GitHub-hosted runner not supporting it
+		# See https://github.com/hsutter/cppfront/issues/943
+		if [[ "$cxx_compiler" == *"cl.exe"* ]]; then
+			opt="$opt -include-std"
+		fi
     fi
     echo "    Testing $descr: $test_name.cpp2"