ActionSheetIOS - Pass URL, not file contents to UIActivityViewControl…

…ler for file URLs.

Summary:
Currently, when sharing local files, the file contents are being sent as NSData causing the file to never be attached when sharing via Email or via Airdrop, being renamed to something obscure such as (null)-257D026032E9-1.data
Simply passing the Local File URL to UIActivityViewController instead of the file contents resolves this issue.
More info on this issue: #8442
Closes #9693

Differential Revision: D3821142

Pulled By: javache

fbshipit-source-id: a06128db88d24cf5565169f321365ace43ab89fe

Libraries/ActionSheetIOS/RCTActionSheetManager.m

@@ -135,7 +135,7 @@ - (CGRect)sourceRectInView:(UIView *)sourceView
   }
   NSURL *URL = [RCTConvert NSURL:options[@"url"]];
   if (URL) {
-    if (URL.fileURL || [URL.scheme.lowercaseString isEqualToString:@"data"]) {
+    if ([URL.scheme.lowercaseString isEqualToString:@"data"]) {
       NSError *error;
       NSData *data = [NSData dataWithContentsOfURL:URL
                                            options:(NSDataReadingOptions)0