Move accessibilityActions property to UIView+React (facebook#25015)

Summary:
As PR [facebook#24743](facebook#24743) suggested, accessibility properties are better to set on UIView+React instead of RCTView so they can be used safely on any UIView.

## Changelog

[General] [Fixed] - Move accessibilityActions props to UIView+React
Pull Request resolved: facebook#25015

Differential Revision: D15503131

Pulled By: cpojer

fbshipit-source-id: dedf9afbd0a1d35a5abbd13ace95ee620f718f39

Author: xuelgong

React/Views/RCTView.h

@@ -23,7 +23,6 @@ extern const UIAccessibilityTraits SwitchAccessibilityTrait;
 /**
  * Accessibility event handlers
  */
-@property (nonatomic, copy) NSArray <NSDictionary *> *accessibilityActions;
 @property (nonatomic, copy) RCTDirectEventBlock onAccessibilityAction;
 @property (nonatomic, copy) RCTDirectEventBlock onAccessibilityTap;
 @property (nonatomic, copy) RCTDirectEventBlock onMagicTap;

React/Views/RCTView.m

@@ -158,33 +158,21 @@ - (NSString *)accessibilityLabel
   return RCTRecursiveAccessibilityLabel(self);
 }
 
--(void)setAccessibilityActions:(NSArray *)actions
-{
-  if (!actions) {
-    return;
-  }
-  accessibilityActionsNameMap = [[NSMutableDictionary alloc] init];
-  accessibilityActionsLabelMap = [[NSMutableDictionary alloc] init];
-  for (NSDictionary *action in actions) {
-    if (action[@"name"]) {
-      accessibilityActionsNameMap[action[@"name"]] = action;
-    }
-    if (action[@"label"]) {
-      accessibilityActionsLabelMap[action[@"label"]] = action;
-    }
-  }
-  _accessibilityActions = [actions copy];
-}
-
 - (NSArray <UIAccessibilityCustomAction *> *)accessibilityCustomActions
 {
   if (!self.accessibilityActions.count) {
     return nil;
   }
 
+  accessibilityActionsNameMap = [[NSMutableDictionary alloc] init];
+  accessibilityActionsLabelMap = [[NSMutableDictionary alloc] init];
   NSMutableArray *actions = [NSMutableArray array];
   for (NSDictionary *action in self.accessibilityActions) {
+    if (action[@"name"]) {
+      accessibilityActionsNameMap[action[@"name"]] = action;
+    }
     if (action[@"label"]) {
+      accessibilityActionsLabelMap[action[@"label"]] = action;
       [actions addObject:[[UIAccessibilityCustomAction alloc] initWithName:action[@"label"]
                                                                     target:self
                                                                   selector:@selector(didActivateAccessibilityCustomAction:)]];

React/Views/UIView+React.h

@@ -119,6 +119,7 @@
 @property (nonatomic, copy) NSString *accessibilityRole;
 @property (nonatomic, copy) NSArray <NSString *> *accessibilityStates;
 @property (nonatomic, copy) NSDictionary<NSString *, id> *accessibilityState;
+@property (nonatomic, copy) NSArray <NSDictionary *> *accessibilityActions;
 
 /**
  * Used in debugging to get a description of the view hierarchy rooted at