EdgeIndexPrefixScan degenerates to EdgeIndexFullScan + Filter

[jievince]

# a IN b AND c (EdgeIndexPrefixScan)
When profiling query:
  """
  LOOKUP ON edge_1
  WHERE edge_1.col2_int IN [11 , 66/2] AND edge_1.col2_int==11
  YIELD edge_1.col2_int
  """
Then the result should be, in any order:
  | SrcVID | DstVID | Ranking | edge_1.col2_int |
  | "101"  | "102"  | 0       | 11              |
And the execution plan should be:
  | id | name                | dependencies | operator info |
  | 3  | Project             | 4            |               |
  | 4  | EdgeIndexPrefixScan | 0            |               |
  | 0  | Start               |              |               |