Fabric: Removing const qualifier from AccessibilityProps fields

Summary:
This is a part of migration staterted in D19390813.
There is no need to have those as const. The whole *Props object is usually const (and when it's not, props should not be too).
Changelog: [Internal] Fabric-specific internal change.

Reviewed By: sammy-SC

Differential Revision: D20212255

fbshipit-source-id: 87f3d8e7a94c6626bd9b0fc304f75e915dd73d4c

ReactCommon/fabric/components/view/accessibility/AccessibilityProps.h

@@ -24,20 +24,19 @@ class AccessibilityProps {
 
 #pragma mark - Props
 
-  bool const accessible{false};
-  AccessibilityTraits const accessibilityTraits{AccessibilityTraits::None};
-  std::string const accessibilityLabel{""};
-  std::string const accessibilityHint{""};
-  std::vector<std::string> const accessibilityActions{};
-  bool const accessibilityViewIsModal{false};
-  bool const accessibilityElementsHidden{false};
-  bool const accessibilityIgnoresInvertColors{false};
-  bool const onAccessibilityTap{};
-  bool const onAccessibilityMagicTap{};
-  bool const onAccessibilityEscape{};
-  bool const onAccessibilityAction{};
-
-  std::string const testId{""};
+  bool accessible{false};
+  AccessibilityTraits accessibilityTraits{AccessibilityTraits::None};
+  std::string accessibilityLabel{""};
+  std::string accessibilityHint{""};
+  std::vector<std::string> accessibilityActions{};
+  bool accessibilityViewIsModal{false};
+  bool accessibilityElementsHidden{false};
+  bool accessibilityIgnoresInvertColors{false};
+  bool onAccessibilityTap{};
+  bool onAccessibilityMagicTap{};
+  bool onAccessibilityEscape{};
+  bool onAccessibilityAction{};
+  std::string testId{""};
 
 #pragma mark - DebugStringConvertible