feat(combat): water traversal costs 3 and ends the turn

tests/Unit/Domain/MatchStateTest.php

@@ -56,7 +56,6 @@ final class MatchStateTest extends TestCase
      */
     public static function impassableTerrainProvider(): iterable
     {
-        yield 'water' => [Terrain::Water];
         yield 'blocking' => [Terrain::Blocking];
     }