[CALCITE-311] Added a test-case for filter after window aggregate
[CALCITE-311] Added a test-case for filter after window aggregate

Filters should not be pushed through window aggregate since it might impact results.

julianhyde/calcite,datametica/calcite,xhoong/incubator-calcite,julianhyde/calcite,googleinterns/calcite,julianhyde/calcite,looker-open-source/calcite,looker-open-source/calcite,vlsi/calcite,googleinterns/calcite,vlsi/incubator-calcite,vlsi/incubator-calcite,googleinterns/calcite,xhoong/incubator-calcite,jcamachor/calcite,googleinterns/calcite,datametica/calcite,dindin5258/calcite,apache/calcite,jcamachor/calcite,xhoong/incubator-calcite,julianhyde/calcite,dindin5258/calcite,julianhyde/calcite,arina-ielchiieva/calcite,xhoong/incubator-calcite,arina-ielchiieva/calcite,datametica/calcite,looker-open-source/calcite,apache/calcite,googleinterns/calcite,dindin5258/calcite,dindin5258/calcite,jcamachor/calcite,datametica/calcite,datametica/calcite,vlsi/calcite,julianhyde/calcite,dindin5258/calcite,googleinterns/calcite,arina-ielchiieva/calcite,apache/calcite,looker-open-source/calcite,looker-open-source/calcite,jcamachor/calcite,vlsi/calcite,looker-open-source/calcite,vlsi/calcite,vlsi/calcite,vlsi/calcite,arina-ielchiieva/calcite,apache/calcite,jcamachor/calcite,apache/calcite,jcamachor/calcite,dindin5258/calcite,arina-ielchiieva/calcite,datametica/calcite,apache/calcite