[llvm] [BOLT] Synchronize BBHashMap and YamlBBs in BAT mode (PR #145124)

[Jinjie Huang via llvm-commits]

Jinjie-Huang wrote:

Perhaps another solution would be to figure out how to assign a valid hash to these blocks. (I suspect they might be generated by BOLT rather than being part of the original binary, which would explain why they have no hash?)

https://github.com/llvm/llvm-project/pull/145124