fix(adapter): support conversion from Number to TIMESTAMPTZ in AbstractTypeAdapter

Author: Gezi-lzq

core/src/main/java/kafka/automq/table/binder/AbstractTypeAdapter.java

@@ -206,6 +206,9 @@ protected Object convertTimestamp(Object sourceValue, S sourceSchema, Types.Time
             Instant instant = Instant.parse(sourceValue.toString());
             return DateTimeUtil.timestamptzFromMicros(DateTimeUtil.microsFromInstant(instant));
         }
+        if (sourceValue instanceof Number) {
+            return DateTimeUtil.timestamptzFromMicros(((Number) sourceValue).longValue());
+        }
         throw new IllegalArgumentException("Cannot convert " + sourceValue.getClass().getSimpleName() + " to " + targetType.typeId());
     }