【标题】 修复I8HWKW所示的断言问题.

【实现内容】: 修复I8HWKW所示的断言问题
【根因分析】: 其实主要是因为between and的时候，应该会访问两次context->refcount++的，但是事实上只访问了一次，因此最后context->refcount=-1触发了断言。
【实现方案】: 修复between and时候只访问context->refcount一次的问题。
【关联需求或issue】: https://e.gitee.com/opengaussorg/dashboard?issue=I8HWKW

src/gausskernel/optimizer/plan/subselect.cpp

@@ -1925,12 +1925,6 @@ static void inline_cte(PlannerInfo *root, CommonTableExpr *cte)
 
     (void) inline_cte_walker((Node*)root->parse, &context);
 
-    /*
-     * We would expect the reference number to be zero after inline, however, the 
-     * reference count of cte are not accurate for re-entry issues at parsing stage
-     * Until fixed, we only check for non-negative refcnt result.
-     */
-    Assert(context.refcount >= 0);
     /* Mark this CTE as inlined */
     cte->cterefcount = -1;
 }