Make manual activation recognizer not cancel UIControls (#2545)

## Description

On iOS, manual activation is implemented in a somewhat hacky way:
- if a gesture is declared with manual activation, an additional MA
recognizer is added to a view
- that recognizer activated immediately, and the original recognizer
requires it to fail in order to activate
- when we want to activate to original recognizer we simply cancel the
MA recognizer

That's because there's no API for delaying or forcing recognizer
activation on iOS, but making require-to-fail relations and failing
recognizers is pretty straightforward.

The issue with that approach was the fact, that activation of the MA
recognizer caused all touches in the view to be canceled, which meant
that every UIControl wouldn't work.
This PR adds `cancelsTouchesInView = NO` to the MA recognizer, to
prevent it from canceling underlying `UIControls`.

Fixes
#2544

## Test plan

Tested on the Example app and on the code from the issue.

Author: j-piasecki

ios/RNManualActivationRecognizer.m

@@ -10,8 +10,9 @@ - (id)initWithGestureHandler:(RNGestureHandler *)gestureHandler
 {
   if ((self = [super initWithTarget:self action:@selector(handleGesture:)])) {
     _handler = gestureHandler;
-    self.delegate = self;
     _activePointers = 0;
+    self.delegate = self;
+    self.cancelsTouchesInView = NO;
   }
   return self;
 }