reduce cache size for all SingleEntryFileBasedIndexExtension by default

GitOrigin-RevId: 54b0615a0c4cc9dfaef7bb968ebc7819376636a3

platform/indexing-impl/src/com/intellij/util/indexing/SingleEntryFileBasedIndexExtension.java

@@ -38,6 +38,11 @@ public abstract class SingleEntryFileBasedIndexExtension<V> extends FileBasedInd
     return true;
   }
 
+  @Override
+  public int getCacheSize() {
+    return 5;
+  }
+
   @NotNull
   @Override
   public abstract SingleEntryIndexer<V> getIndexer();

platform/lang-impl/src/com/intellij/psi/stubs/StubUpdatingIndex.java

@@ -101,11 +101,6 @@ public class StubUpdatingIndex extends SingleEntryFileBasedIndexExtension<Serial
     return INDEX_ID;
   }
 
-  @Override
-  public int getCacheSize() {
-    return 5; // no need to cache many serialized trees
-  }
-
   @NotNull
   @Override
   public SingleEntryIndexer<SerializedStubTree> getIndexer() {