Update Fake.class to support OpenJ9 Field Layout

Currently lombok crashes when building with OpenJ9 JDK as described in #2414
It is due to the `override` field offset from Fake.class doesn't match actual offset value for AccessibleObject.class in OpenJ9 
This change is to support the OpenJ9 Field layout algorithm.

src/utils/lombok/permit/Permit.java

@@ -95,6 +95,7 @@ private static long getOverrideFieldOffset() throws Throwable {
 
 	static class Fake {
 		boolean override;
+		Object accessCheckCache;
 	}
 
 	public static Method getMethod(Class<?> c, String mName, Class<?>... parameterTypes) throws NoSuchMethodException {