9085dee476 qa: Add lock order annotation for TxMempool::cs (David Gumberg)
Pull request description:
I added this to see if static analysis would catch any lock order inversions while investigating #34731, it did not catch any but it is a worthwhile defense against statically-analyzable inversions of `cs_main->TxMempool::cs`.
ACKs for top commit:
sedited:
tested ACK 9085dee476
hebasto:
ACK 9085dee476.
w0xlt:
ACK 9085dee476
Tree-SHA512: 498605362e7b197b7643a3f9ffd04589bc9b245aca1d245d289efa145906248c1a72f9fbf4835a9378aabe170b747dc0cc033105915a2bf7a9989de368710c02