fix: iOS links (#272)

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# Summary

Firstly, it turns out that something in the internal implementation of
`attribute:atIndex:longestEffectiveRange:inRange` has been changed and
if no attribute has been found, longest effective range is set to whole
range we are searching in. This resulted in links wrongly returning that
their range is whole input and it had implications in fonts and
foreground colors randomly breaking when applying links.

Secondly, improved detecting links. The detection made after updating an
automatic link didn't take recently emitted link into consideration and
ran the event even if the automatic link wasn't updated - resulting in a
double emit. The text when applying link was also double emitted because
`LinkStyle's` `addLink` redundantly called `anyTextMayHaveBeenModified`

## Test Plan

- To check the first issue, apply a manual link via link editor while
having some inline code and blockquotes in the input. See that their
styling is stil intact.
- For the second one just add an automatic link and see no double
emitting in console.

## Screenshots / Videos

--

## Compatibility

| OS      | Implemented |
| ------- | :---------: |
| iOS     |    ✅     |
| Android |    ❌(doesn't apply)     |

Author: szydlovsky

ios/EnrichedTextInputView.mm

@@ -711,9 +711,6 @@ - (void)tryUpdatingActiveStyles {
   if(detectedLinkData != nullptr) {
     // emit onLinkeDetected event
     [self emitOnLinkDetectedEvent:detectedLinkData.text url:detectedLinkData.url range:detectedLinkRange];
-    
-    _recentlyActiveLinkData = detectedLinkData;
-    _recentlyActiveLinkRange = detectedLinkRange;
   }
 
   if(detectedMentionParams != nullptr) {
@@ -812,6 +809,13 @@ - (void)setValue:(NSString *)value {
 - (void)emitOnLinkDetectedEvent:(NSString *)text url:(NSString *)url range:(NSRange)range {
   auto emitter = [self getEventEmitter];
   if(emitter != nullptr) {
+    // update recently active link info
+    LinkData *newLinkData = [[LinkData alloc] init];
+    newLinkData.text = text;
+    newLinkData.url = url;
+    _recentlyActiveLinkData = newLinkData;
+    _recentlyActiveLinkRange = range;
+  
     emitter->onLinkDetected({
       .text = [text toCppString],
       .url = [url toCppString],

ios/styles/LinkStyle.mm

@@ -167,7 +167,6 @@ - (void)addLink:(NSString*)text url:(NSString*)url range:(NSRange)range manual:(
   }
 
   [self manageLinkTypingAttributes];
-  [_input anyTextMayHaveBeenModified];
 }
 
 // get exact link data at the given location if it exists
@@ -224,20 +223,22 @@ - (NSRange)getFullLinkRangeAt:(NSUInteger)location {
     }
   }
 
-  [_input->textView.textStorage
+  NSString *manualLink = [_input->textView.textStorage
     attribute:ManualLinkAttributeName
     atIndex:searchLocation
     longestEffectiveRange: &manualLinkRange
     inRange:inputRange
   ];
-  [_input->textView.textStorage
+  NSString *automaticLink = [_input->textView.textStorage
     attribute:AutomaticLinkAttributeName
     atIndex:searchLocation
     longestEffectiveRange: &automaticLinkRange
     inRange:inputRange
   ];
 
-  return manualLinkRange.length == 0 ? automaticLinkRange : manualLinkRange;
+  return manualLink == nullptr
+    ? automaticLink == nullptr ? NSMakeRange(0, 0) : automaticLinkRange
+    : manualLinkRange;
 }
 
 - (void)manageLinkTypingAttributes {
@@ -349,10 +350,9 @@ - (void)handleAutomaticLinks:(NSString *)word inRange:(NSRange)wordRange {
     }
     if(addStyle) {
       [self addLink:word url:regexPassedUrl range:wordRange manual:NO];
+      // emit onLinkDetected if style was added
+      [_input emitOnLinkDetectedEvent:word url:regexPassedUrl range:wordRange];
     }
-  
-    // emit onLinkDetected
-    [_input emitOnLinkDetectedEvent:word url:regexPassedUrl range:wordRange];
   }
 }