Fix race condition in tests introduced by a79d401058

The race condition stems from the fact that queries are now async, so there is a chance this test hits ENTER before the new search queries have come in.

client/client_test.go

@@ -1825,7 +1825,7 @@ func TestTui(t *testing.T) {
 	// Check the output when there is a selected result
 	out = captureTerminalOutput(t, tester, []string{
 		"hishtory SPACE tquery ENTER",
-		"ls ENTER",
+		"ls", "ENTER",
 	})
 	out = strings.Split(strings.TrimSpace(strings.Split(out, "hishtory tquery")[1]), "\n")[0]
 	expected := `ls ~/`