Fix exception thrown by [RCTTextView description] on macOS

Summary:
This method assumes a semicolon existed before the closing bracket (`>`), but only does on iOS. This instead puts the content before the closing bracket, which is always there on both platforms.

Changelog:
[macOS][Fixed] - Fix exception thrown by [RCTTextView description] on macOS

Reviewed By: sammy-SC

Differential Revision: D38074642

fbshipit-source-id: f46d15c2bf2d966d1c1430568f083e4d501d4b40

Author: christophpurrer

Libraries/Text/Text/RCTTextView.m

@@ -38,9 +38,9 @@ - (instancetype)initWithFrame:(CGRect)frame
 - (NSString *)description
 {
   NSString *superDescription = super.description;
-  NSRange semicolonRange = [superDescription rangeOfString:@";"];
-  NSString *replacement = [NSString stringWithFormat:@"; reactTag: %@; text: %@", self.reactTag, _textStorage.string];
-  return [superDescription stringByReplacingCharactersInRange:semicolonRange withString:replacement];
+  NSRange replacementRange = [superDescription rangeOfString:@">"];
+  NSString *replacement = [NSString stringWithFormat:@"; reactTag: %@; text: %@>", self.reactTag, _textStorage.string];
+  return [superDescription stringByReplacingCharactersInRange:replacementRange withString:replacement];
 }
 
 - (void)setSelectable:(BOOL)selectable
@@ -113,7 +113,7 @@ - (void)drawRect:(CGRect)rect
   // CATextLayer disables font smoothing by default now on macOS; we follow suit.
   CGContextSetShouldSmoothFonts(context, NO);
 #endif
-  
+
   NSRange glyphRange = [layoutManager glyphRangeForTextContainer:textContainer];
   [layoutManager drawBackgroundForGlyphRange:glyphRange atPoint:_contentFrame.origin];
   [layoutManager drawGlyphsForGlyphRange:glyphRange atPoint:_contentFrame.origin];
@@ -157,7 +157,7 @@ - (void)drawRect:(CGRect)rect
     [_highlightLayer removeFromSuperlayer];
     _highlightLayer = nil;
   }
-  
+
 #if TARGET_OS_MACCATALYST
   CGContextRestoreGState(context);
 #endif