e2e: avoid non-determinism in app hash check (#6985)

test/e2e/tests/app_test.go

@@ -44,15 +44,17 @@ func TestApp_Hash(t *testing.T) {
 		require.NoError(t, err)
 		require.NotEmpty(t, info.Response.LastBlockAppHash, "expected app to return app hash")
 
-		block, err := client.Block(ctx, nil)
+		status, err := client.Status(ctx)
 		require.NoError(t, err)
-		require.EqualValues(t, info.Response.LastBlockAppHash, block.Block.AppHash.Bytes(),
-			"app hash does not match last block's app hash")
+		if info.Response.LastBlockHeight == status.SyncInfo.LatestBlockHeight {
+			require.EqualValues(t, info.Response.LastBlockAppHash, status.SyncInfo.LatestAppHash,
+				"app hash does not match node status")
+		}
 
-		status, err := client.Status(ctx)
+		block, err := client.Block(ctx, &info.Response.LastBlockHeight)
 		require.NoError(t, err)
-		require.EqualValues(t, info.Response.LastBlockAppHash, status.SyncInfo.LatestAppHash,
-			"app hash does not match node status")
+		require.EqualValues(t, info.Response.LastBlockAppHash, block.Block.AppHash.Bytes(),
+			"app hash does not match last block's app hash")
 	})
 }