Incompatible issues of cross stage aggregate operators

### Description

Spark sort agg will be replaced by gluten hash agg if it is transformable. But it is possible that partial agg is offloaded, but final agg cannot due to agg's post project is not supported. As partial hash agg is not compatible with final sort agg, there will have runtime issues. ObjectHash agg should also have such similar issue.

One internally proposed solution is, moving unsupported post project to an independent project operator. Thus, we can make final agg transformed and just make post project fall back.