core/txpool: remove locals-tracking from txpools (#30559)

Replaces  #29297, descendant from #27535

---------

This PR removes `locals` as a concept from transaction pools. Therefore,
the pool now acts as very a good simulation/approximation of how our
peers' pools behave. What this PR does instead, is implement a
locals-tracker, which basically is a little thing which, from time to
time, asks the pool "did you forget this transaction?". If it did, the
tracker resubmits it.

If the txpool _had_ forgotten it, chances are that the peers had also
forgotten it. It will be propagated again.

Doing this change means that we can simplify the pool internals, quite a
lot.

### The semantics of `local` 

Historically, there has been two features, or usecases, that has been
combined into the concept of `locals`.

1. "I want my local node to remember this transaction indefinitely, and
resubmit to the network occasionally"
2. "I want this (valid) transaction included to be top-prio for my
miner"


This PR splits these features up, let's call it `1: local` and `2:
prio`. The `prio` is not actually individual transaction, but rather a
set of `address`es to prioritize.
The attribute `local` means it will be tracked, and `prio` means it will
be prioritized by miner.

For `local`: anything transaction received via the RPC is marked as
`local`, and tracked by the tracker.
For `prio`: any transactions from this sender is included first, when
building a block. The existing commandline-flag `--txpool.locals` sets
the set of `prio` addresses.

---------

Co-authored-by: Gary Rong <[email protected]>

Author: holiman

core/txpool/blobpool/blobpool.go

@@ -1269,7 +1269,7 @@ func (p *BlobPool) GetBlobs(vhashes []common.Hash) ([]*kzg4844.Blob, []*kzg4844.
 
 // Add inserts a set of blob transactions into the pool if they pass validation (both
 // consensus validity and pool restrictions).
-func (p *BlobPool) Add(txs []*types.Transaction, local bool, sync bool) []error {
+func (p *BlobPool) Add(txs []*types.Transaction, sync bool) []error {
 	var (
 		adds = make([]*types.Transaction, 0, len(txs))
 		errs = make([]error, len(txs))
@@ -1701,13 +1701,6 @@ func (p *BlobPool) ContentFrom(addr common.Address) ([]*types.Transaction, []*ty
 	return []*types.Transaction{}, []*types.Transaction{}
 }
 
-// Locals retrieves the accounts currently considered local by the pool.
-//
-// There is no notion of local accounts in the blob pool.
-func (p *BlobPool) Locals() []common.Address {
-	return []common.Address{}
-}
-
 // Status returns the known status (unknown/pending/queued) of a transaction
 // identified by their hashes.
 func (p *BlobPool) Status(hash common.Hash) txpool.TxStatus {