669c943 Avoid leaking prioritization information when relaying transactions (Suhas Daftuar)
0975406 Correct mempool mapTx comment (Suhas Daftuar)
Pull request description:
Following up on #12127 and #12118, this cleans up a comment that was left incorrect in txmempool.h, and addresses a couple of the observations @TheBlueMatt made about an unnecessary use of `queryHashes()` and a small information leak when prioritizing transactions. Left undone is nuking queryHashes altogether; that would require changing the behavior of the `getrawmempool` rpc call, which I think I might be in favor of doing, but wanted to save for its own PR.
Backport of Core PR12225
Depends on D3711