core: recover state when beacon sets canonical head if it's missing (#24613)

* core: recover the state in SetChainHead if the head state is missing

* core: disable test logging

* core: address comment from martin

* core: improve log level in case state is recovered

* core, eth, les, light: rename SetChainHead to SetCanonical

les/catalyst/api_test.go

@@ -194,7 +194,7 @@ func TestEth2DeepReorg(t *testing.T) {
 			if ethservice.BlockChain().CurrentBlock().NumberU64() != head {
 				t.Fatalf("Chain head shouldn't be updated")
 			}
-			if err := api.setHead(block.Hash()); err != nil {
+			if err := api.setCanonical(block.Hash()); err != nil {
 				t.Fatalf("Failed to set head: %v", err)
 			}
 			if ethservice.BlockChain().CurrentBlock().NumberU64() != block.NumberU64() {