test(systemtests): fix query block-results in TestStakeUnstake for v2…

… (backport #22782) (#22784)

Co-authored-by: mmsqe <mavis@crypto.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

tests/systemtests/staking_test.go

@@ -42,7 +42,11 @@ func TestStakeUnstake(t *testing.T) {
 	assert.Equal(t, int64(8999999), cli.QueryBalance(account1Addr, "stake"))
 
 	// check validator has been updated
-	rsp = cli.CustomQuery("q", "block-results", gjson.Get(rsp, "height").String())
+	if systest.IsV2() {
+		rsp = cli.CustomQuery("q", "comet", "block-results", gjson.Get(rsp, "height").String())
+	} else {
+		rsp = cli.CustomQuery("q", "block-results", gjson.Get(rsp, "height").String())
+	}
 	validatorUpdates := gjson.Get(rsp, "validator_updates").Array()
 	assert.NotEmpty(t, validatorUpdates)
 	vpk := gjson.Get(validatorUpdates[0].String(), "pub_key_bytes").String()