Fix not getting expected injected read error (#12793)

Fix not getting expected injected read error (#12793)

Summary:
**Context/Summary:**

https://github.com/facebook/rocksdb/pull/12713 accidentally removed the mechanism of ignoring injected read error on non-critical read path such as read from filter. IO failure in read from filter should not fail the read as we can always read from the actual file. Therefore error injection in filter read path does not need to lead to failure in Get() and crash test should allow that. Otherwise, we will get crash test error "Didn't get expected error from..."

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12793

Test Plan: CI

Reviewed By: cbi42

Differential Revision: D58895393

Pulled By: hx235

fbshipit-source-id: 5b605d8446e0b8d4149cdbe6f4be3c7534d4acfa