IGNITE-28362 Fix CacheTestAsync.TestPutAll (#12938)

Author: maksaska

modules/core/src/main/java/org/apache/ignite/internal/processors/platform/client/cache/ImmutableArrayMap.java

@@ -18,7 +18,9 @@
 package org.apache.ignite.internal.processors.platform.client.cache;
 
 import java.io.Serializable;
+import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -60,7 +62,7 @@ public ImmutableArrayMap(K[] keysArr, V[] valuesArr) {
         assert keysArr.length == valuesArr.length : "Arrays should be equal in size!";
 
         this.keys = new ImmutableArraySet<>(keysArr);
-        this.values = List.of(valuesArr);
+        this.values = Collections.unmodifiableList(Arrays.asList(valuesArr));
     }
 
     /** {@inheritDoc} */