Simplify TestingConnectorBehavior declarations

Use `true` or a related behavior as the default rather than `false`. Few
cases being off by default remain, but generally true as the default is
much easier to reason about. False defaults were usually a result of
incremental additions, where it's easier to add a behavior that is not
widely adopted, but are harder to think about in a long run.

testing/trino-testing/src/main/java/io/trino/testing/TestingConnectorBehavior.java

@@ -37,13 +37,12 @@ public enum TestingConnectorBehavior
     SUPPORTS_TOPN_PUSHDOWN_WITH_VARCHAR(fallback -> fallback.test(SUPPORTS_TOPN_PUSHDOWN) && fallback.test(SUPPORTS_PREDICATE_PUSHDOWN_WITH_VARCHAR_INEQUALITY)),
 
     SUPPORTS_AGGREGATION_PUSHDOWN,
-    // Most connectors don't support aggregation pushdown for statistical functions
-    SUPPORTS_AGGREGATION_PUSHDOWN_STDDEV(false),
-    SUPPORTS_AGGREGATION_PUSHDOWN_VARIANCE(false),
-    SUPPORTS_AGGREGATION_PUSHDOWN_COVARIANCE(false),
-    SUPPORTS_AGGREGATION_PUSHDOWN_CORRELATION(false),
-    SUPPORTS_AGGREGATION_PUSHDOWN_REGRESSION(false),
-    SUPPORTS_AGGREGATION_PUSHDOWN_COUNT_DISTINCT(false),
+    SUPPORTS_AGGREGATION_PUSHDOWN_STDDEV(SUPPORTS_AGGREGATION_PUSHDOWN),
+    SUPPORTS_AGGREGATION_PUSHDOWN_VARIANCE(SUPPORTS_AGGREGATION_PUSHDOWN),
+    SUPPORTS_AGGREGATION_PUSHDOWN_COVARIANCE(SUPPORTS_AGGREGATION_PUSHDOWN),
+    SUPPORTS_AGGREGATION_PUSHDOWN_CORRELATION(SUPPORTS_AGGREGATION_PUSHDOWN),
+    SUPPORTS_AGGREGATION_PUSHDOWN_REGRESSION(SUPPORTS_AGGREGATION_PUSHDOWN),
+    SUPPORTS_AGGREGATION_PUSHDOWN_COUNT_DISTINCT(SUPPORTS_AGGREGATION_PUSHDOWN),
 
     SUPPORTS_JOIN_PUSHDOWN(
             // Currently no connector supports Join pushdown by default. JDBC connectors may support Join pushdown and BaseJdbcConnectorTest
@@ -73,13 +72,13 @@ public enum TestingConnectorBehavior
     SUPPORTS_SET_COLUMN_TYPE,
 
     SUPPORTS_COMMENT_ON_TABLE,
-    SUPPORTS_COMMENT_ON_VIEW(false),
-    SUPPORTS_COMMENT_ON_COLUMN,
-    SUPPORTS_COMMENT_ON_VIEW_COLUMN(false),
+    SUPPORTS_COMMENT_ON_COLUMN(SUPPORTS_COMMENT_ON_TABLE),
+    SUPPORTS_COMMENT_ON_VIEW(SUPPORTS_COMMENT_ON_TABLE),
+    SUPPORTS_COMMENT_ON_VIEW_COLUMN(SUPPORTS_COMMENT_ON_VIEW),
 
-    SUPPORTS_CREATE_VIEW(false),
+    SUPPORTS_CREATE_VIEW,
 
-    SUPPORTS_CREATE_MATERIALIZED_VIEW(false),
+    SUPPORTS_CREATE_MATERIALIZED_VIEW,
     SUPPORTS_CREATE_MATERIALIZED_VIEW_GRACE_PERIOD(SUPPORTS_CREATE_MATERIALIZED_VIEW),
     SUPPORTS_CREATE_FEDERATED_MATERIALIZED_VIEW(SUPPORTS_CREATE_MATERIALIZED_VIEW), // i.e. an MV that spans catalogs
     SUPPORTS_RENAME_MATERIALIZED_VIEW(SUPPORTS_CREATE_MATERIALIZED_VIEW),
@@ -88,14 +87,15 @@ public enum TestingConnectorBehavior
     SUPPORTS_INSERT,
     SUPPORTS_NOT_NULL_CONSTRAINT(SUPPORTS_CREATE_TABLE),
 
-    SUPPORTS_DELETE(false),
+    SUPPORTS_MERGE,
+
+    SUPPORTS_DELETE(SUPPORTS_MERGE),
     SUPPORTS_ROW_LEVEL_DELETE(SUPPORTS_DELETE),
 
-    SUPPORTS_UPDATE(false),
+    SUPPORTS_UPDATE(SUPPORTS_MERGE),
 
-    SUPPORTS_MERGE(false),
 
-    SUPPORTS_TRUNCATE(false),
+    SUPPORTS_TRUNCATE(SUPPORTS_DELETE),
 
     SUPPORTS_NEGATIVE_DATE,