Summary:
The fix in https://github.com/facebook/rocksdb/issues/10513 was not complete w.r.t range deletion handling. It didn't handle the case where a file with a range tombstone covering a key also overlapped another key in the batch. In that case, ```mget_range``` would be non-empty. However, ```mget_range``` would only have the second key and, therefore, the first key would be skipped when iterating through the range tombstones in ```TableCache::MultiGet```.

Test plan -
1. Add a unit test
2. Run stress tests

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10534

Reviewed By: akankshamahajan15

Differential Revision: D38773880

Pulled By: anand1976

fbshipit-source-id: dae491dbe52e18bbce5179b77b63f20771a66c00