Fix race condition in test server SA (#1905)

Fix race condition in test server SA and register TemporalChangeVersion
by default.

Author: Quinn-With-Two-Ns

temporal-sdk/src/test/java/io/temporal/workflow/searchattributes/TypedSearchAttributesTest.java

@@ -67,6 +67,7 @@ public class TypedSearchAttributesTest {
           .set(SearchAttributeKey.forDouble("CustomDoubleField"), 1.23)
           .set(SearchAttributeKey.forBoolean("CustomBoolField"), true)
           .set(SearchAttributeKey.forOffsetDateTime("CustomDatetimeField"), OffsetDateTime.now())
+          .set(SearchAttributeKey.forKeywordList("TemporalChangeVersion"), Arrays.asList("version"))
           .build();
 
   @Rule

temporal-test-server/src/main/java/io/temporal/internal/testservice/TestVisibilityStoreImpl.java

@@ -28,7 +28,6 @@
 import io.temporal.internal.common.ProtoEnumNameUtils;
 import io.temporal.internal.common.SearchAttributesUtil;
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import javax.annotation.Nonnull;
@@ -42,6 +41,7 @@ class TestVisibilityStoreImpl implements TestVisibilityStore {
   private static final String DEFAULT_KEY_DATE_TIME = "CustomDatetimeField";
   private static final String DEFAULT_KEY_DOUBLE = "CustomDoubleField";
   private static final String DEFAULT_KEY_BOOL = "CustomBoolField";
+  private static final String TEMPORAL_CHANGE_VERSION = "TemporalChangeVersion";
 
   private final Map<String, IndexedValueType> searchAttributes =
       new ConcurrentHashMap<>(
@@ -53,9 +53,11 @@ class TestVisibilityStoreImpl implements TestVisibilityStore {
               .put(DEFAULT_KEY_DOUBLE, IndexedValueType.INDEXED_VALUE_TYPE_DOUBLE)
               .put(DEFAULT_KEY_BOOL, IndexedValueType.INDEXED_VALUE_TYPE_BOOL)
               .put(DEFAULT_KEY_DATE_TIME, IndexedValueType.INDEXED_VALUE_TYPE_DATETIME)
+              .put(TEMPORAL_CHANGE_VERSION, IndexedValueType.INDEXED_VALUE_TYPE_KEYWORD_LIST)
               .build());
 
-  private final Map<ExecutionId, SearchAttributes> executionSearchAttributes = new HashMap<>();
+  private final Map<ExecutionId, SearchAttributes> executionSearchAttributes =
+      new ConcurrentHashMap<>();
 
   @Override
   public void addSearchAttribute(String name, IndexedValueType type) {