Fix AccessibilityIdentifierTests_ViewTestActor.testEnteringTextIntoVi…

…ewWithAccessibilityIdentifier flaking

We're trying to tap on `Select All` while it is still being animated into view. The problem is two-fold:

1. The `longPress` action doesn't wait for animations to complete, it just uses a hardcoded .5s before starting the next action.
2. Even after switching to use `waitForAnimationsToFinish`, the timeout defaults to .5s as the max to wait for animations to complete.

To fix this, I switched `longPress` action to use `waitForAnimationsToFinish` and I upped the default timeout to wait up to 2s for animations to complete. This seems to work much more reliably now.

Sources/KIF/Classes/KIFTestActor.m

@@ -131,7 +131,7 @@ - (void)runBlock:(KIFTestExecutionBlock)executionBlock
 
 #pragma mark Class Methods
 
-static NSTimeInterval KIFTestStepDefaultAnimationWaitingTimeout = 0.5;
+static NSTimeInterval KIFTestStepDefaultAnimationWaitingTimeout = 2.0;
 static NSTimeInterval KIFTestStepDefaultAnimationStabilizationTimeout = 0.5;
 static NSTimeInterval KIFTestStepDefaultMainThreadDispatchStabilizationTimeout = 0.5;
 static NSTimeInterval KIFTestStepDefaultTimeout = 10.0;

Sources/KIF/Classes/KIFUITestActor.m

@@ -462,7 +462,7 @@ - (void)longPressAccessibilityElement:(UIAccessibilityElement *)element inView:(
     }];
 
     // Wait for view to settle.
-    [self waitForTimeInterval:0.5 relativeToAnimationSpeed:YES];
+    [self waitForAnimationsToFinish];
 }
 
 - (void)waitForKeyboard