harden UI tests

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/androidTest/java/com/owncloud/android/ui/dialog/SendShareDialogTest.kt

@@ -54,7 +54,7 @@ class SendShareDialogTest : AbstractIT() {
 
         InstrumentationRegistry.getInstrumentation().waitForIdleSync()
         shortSleep()
-
+        shortSleep()
         sut.requireDialog().window?.decorView.let { screenshot(it) }
     }
 }