Drop support of 8-bit integers input for CumulativeSum (#912)

Fix #892

Author: huningxin

index.bs

@@ -3333,7 +3333,7 @@ partial dictionary MLOpSupportLimits {
   </thead>
   <tr>
     <td>{{input}}</td>
-    <td>[=/any data type|any=]</td>
+    <td>{{MLOperandDataType/"float32"}}, {{MLOperandDataType/"float16"}}, {{MLOperandDataType/"int32"}}, {{MLOperandDataType/"uint32"}}, {{MLOperandDataType/"int64"}}, {{MLOperandDataType/"uint64"}}</td>
     <td>1 to [=/any rank|N=]</td>
   </tr>
   <tr>