Prevent indefinite transactions_by_peers growth

[Rjected]

The transactions_by_peers data structure in the TransactionsManager appears to grow unbounded:

In this graph, transactions by peers total count is the sum of the vec lengths, and transactions by peers is the number of keys in the map.

See the following from a memory profile, the push operation accounts for almost a third of inuse space:

The line referred to in the memory profile is here:

reth/crates/net/network/src/transactions/mod.rs

Line 998 in 445e1ad

entry.get_mut().push(peer_id);

We need to come up with a way to prune or bound this data structure, after investigating why this does not shrink.

[mattsse]

can close @Rjected ?

[Rjected]

yep, memory with this fix: