Unmodifiable map entry becomes modifiable if taken from a stream of map entries

The problem is reproducible with b95 and b95-lambda promotions.

Please see the following sample:

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import java.util.*;

public class NowModifiable {

    public static void main(String[] args) {

        final HashMap<String, String> hashMap = new HashMap<>();
        hashMap.put("a", "a");
        final Set<Map.Entry<String, String>> unmodifEntrySet = Collections.unmodifiableMap(hashMap).entrySet();

        System.err.println("Entry type = " + unmodifEntrySet.iterator().next().getClass());
        System.err.println("Entry type from stream = " + unmodifEntrySet.stream().findFirst().get().getClass());

        unmodifEntrySet.stream().findFirst().get().setValue("new value1");
        System.err.println("unexpectedly set a new value using element of a stream");

        unmodifEntrySet.iterator().next().setValue("new value2");
        System.err.println("unexpectedly set a new value using element of iterator");

    }
}
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The output will be like:

Entry type = class java.util.Collections$UnmodifiableMap$UnmodifiableEntrySet$UnmodifiableEntry
Entry type from stream = class java.util.HashMap$Entry
unexpectedly set a new value using element of a stream
Exception in thread "main" java.lang.UnsupportedOperationException
at java.util.Collections$UnmodifiableMap$UnmodifiableEntrySet$UnmodifiableEntry.setValue(Collections.java:1608)


The following JCK tests fail due to this issue:

api/java_util/Collections/unmodifiable/index.html#UnmodifiableMapEntrySetStream
api/java_util/Collections/unmodifiable/index.html#UnmodifiableMapEntrySetParallelStream
api/java_util/Collections/unmodifiable/index.html#UnmodifiableSortedMapEntrySetParallelStream
api/java_util/Collections/unmodifiable/index.html#UnmodifiableSortedMapEntrySetStream