Replace statefeed Initialize (#12285)

* refactor initialization to blocking startup method

* require genesisSetter in blockchain, fix tests

* work-around gazelle weirdness

* fix dep gazelle ignores

* only call SetGenesis once

* fix typo

* validator test setup and fix to return right error

* move waitForChainStart to Start

* wire up sync Service.genesisWaiter

* fix p2p genesisWaiter plumbing

* remove extra clock type, integrate into genesis

and rename

* use time.Now when no Nower is specified

* remove unused ClockSetter

* simplify rpc context checking

* fix typo

* use clock everywhere in sync; [32]byte val root

* don't use DeepEqual to compare [32]byte and []byte

* don't use clock in init sync, not wired up yet

* use clock waiter in blockchain as well

* use cancelable contexts in tests with goroutines

* missed a reference to WithClockSetter

* Update beacon-chain/startup/genesis.go

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* Update beacon-chain/blockchain/service_test.go

Co-authored-by: Radosław Kapka <rkapka@wp.pl>

* more clear docs

* doc for NewClock

* move clock typedef to more logical file name

* adding documentation

* gaz

* fixes for capella

* reducing test raciness

* fix races in committee cache tests

* lint

* add tests on Duration slot math helper

* startup package test coverage

* fix bad merge

* set non-zero genesis time in tests that call Start

* happy deepsource, happy me-epsource

* replace Synced event with channel

* remove unused error

* remove accidental wip commit

* gaz!

* remove unused event constants

* remove sync statefeed subscription to fix deadlock

* remove state notifier

* fix build

---------

Co-authored-by: Kasey Kirkham <kasey@users.noreply.github.com>
Co-authored-by: Radosław Kapka <rkapka@wp.pl>
Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>
Co-authored-by: nisdas <nishdas93@gmail.com>

cmd/prysmctl/testnet/generate_genesis.go

@@ -263,6 +263,9 @@ func generateGenesis(ctx context.Context) (state.BeaconState, error) {
 		// set timestamps for genesis and shanghai fork
 		gen.Timestamp = f.GenesisTime
 		gen.Config.ShanghaiTime = interop.GethShanghaiTime(f.GenesisTime, params.BeaconConfig())
+		log.
+			WithField("shanghai", gen.Config.ShanghaiTime).
+			Info("setting fork geth times")
 		if v > version.Altair {
 			// set ttd to zero so EL goes post-merge immediately
 			gen.Config.TerminalTotalDifficulty = big.NewInt(0)