les, light: improve txstatus retrieval (#22349)

Transaction unindexing will be enabled by default as of 1.10, which causes tx status retrieval will be broken without this PR. 

This PR introduces a retry mechanism in TxStatus retrieval.

les/request_test.go

@@ -83,7 +83,14 @@ func tfCodeAccess(db ethdb.Database, bhash common.Hash, num uint64) light.OdrReq
 
 func testAccess(t *testing.T, protocol int, fn accessTestFn) {
 	// Assemble the test environment
-	server, client, tearDown := newClientServerEnv(t, 4, protocol, nil, nil, 0, false, true, true)
+	netconfig := testnetConfig{
+		blocks:    4,
+		protocol:  protocol,
+		indexFn:   nil,
+		connect:   true,
+		nopruning: true,
+	}
+	server, client, tearDown := newClientServerEnv(t, netconfig)
 	defer tearDown()
 
 	// Ensure the client has synced all necessary data.