les: historical data garbage collection (#19570)

This change introduces garbage collection for the light client. Historical
chain data is deleted periodically. If you want to disable the GC, use
the --light.nopruning flag.

trie/trie_test.go

@@ -88,7 +88,7 @@ func testMissingNode(t *testing.T, memonly bool) {
 	updateString(trie, "123456", "asdfasdfasdfasdfasdfasdfasdfasdf")
 	root, _ := trie.Commit(nil)
 	if !memonly {
-		triedb.Commit(root, true)
+		triedb.Commit(root, true, nil)
 	}
 
 	trie, _ = New(root, triedb)