Fix rebase error for pr #234 - C++ Fold Expressions

PR #234 had a compilation error once it was rebased which
wasn't identified until after it was rebased and merged
to main causing build to fail.

This PR is to fix that rebase error.

core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/cxx17/FoldExpressionTests.java

@@ -105,7 +105,7 @@ public void testFoldExpressionInBinaryExpression() throws Exception {
 	//  }
 	public void testFoldExpressionRecognition1() throws Exception {
 		final String code = getAboveComment();
-		IASTTranslationUnit tu = parse(code, CPP, false, false);
+		IASTTranslationUnit tu = parse(code, CPP, ScannerKind.STD, false);
 		ICPPASTTemplateDeclaration tdef = getDeclaration(tu, 0);
 		IASTFunctionDefinition fdef = (IASTFunctionDefinition) tdef.getDeclaration();
 		IASTProblemStatement p1 = getStatement(fdef, 0);
@@ -117,7 +117,7 @@ public void testFoldExpressionRecognition1() throws Exception {
 	//  }
 	public void testFoldExpressionRecognition2() throws Exception {
 		final String code = getAboveComment();
-		IASTTranslationUnit tu = parse(code, CPP, false, false);
+		IASTTranslationUnit tu = parse(code, CPP, ScannerKind.STD, false);
 		ICPPASTTemplateDeclaration tdef = getDeclaration(tu, 0);
 		IASTFunctionDefinition fdef = (IASTFunctionDefinition) tdef.getDeclaration();
 		IASTProblemStatement p1 = getStatement(fdef, 0);

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/dom/ast/cpp/ICPPASTFoldExpression.java

@@ -16,7 +16,7 @@
 /**
  * Fold expression, introduced in C++17.
  *
- * @since 8.0
+ * @since 8.1
  * @noextend This interface is not intended to be extended by clients.
  * @noimplement This interface is not intended to be implemented by clients.
  */