[opt](assert_num_rows) support filter in AssertNumRows operator and fix some explain (#28935)

* NEED

* Update pipeline x

* fix pipelinex compile

be/src/vec/exec/vassert_num_rows_node.cpp

@@ -29,6 +29,7 @@
 
 #include "runtime/runtime_state.h"
 #include "vec/core/block.h"
+#include "vec/exprs/vexpr_context.h"
 
 namespace doris {
 class DescriptorTbl;
@@ -100,6 +101,7 @@ Status VAssertNumRowsNode::pull(doris::RuntimeState* state, vectorized::Block* b
                                  to_string_lambda(_assertion), _desired_num_rows, _subquery_string);
     }
     COUNTER_SET(_rows_returned_counter, _num_rows_returned);
+    RETURN_IF_ERROR(VExprContext::filter_block(_conjuncts, block, block->columns()));
     return Status::OK();
 }