check for match before changing current player

[russfraze]

## Description of changes Now in the handle flipped pair reducer action, we check for a match before changing the current player. If its a match, the current player stays the same, if not, the current player advances.

Test steps

Play the game and check that the current player stays the same after a match is made.

[russfraze]

@perennialAutodidact check this out. Not the current player stays the same and you can show your kid whos boss by dominating the game.

[perennialAutodidact]

Nice work on this bug. Everything works as expected on my end. I think the tests will be more concise if we move them, as mentioned in my other comment.

[perennialAutodidact]

Actually, I've discovered a bug.

• Click two matching tiles. The active player doesn't change
• Click two unmatching tiles. The active player doesn't change.
• Click two unmatching tiles. The active player changes.

[russfraze]

@perennialAutodidact Great job catching that bug. Its fixed and the tests have been changed. Check out this PR when you get a second. Should be good to go!