fix(ios): use controlled path for Cut to prevent formatting corruption (#278)

* fix(ios): prevent crash when deleting mixed selection or using IME input

Always update _lastSelectedRange in textViewDidChangeSelection and
textInputDidChangeSelection before the isApplyingFormatting guard,
ensuring _preEditSelectedRange is never stale when handleTextChanged
computes edit parameters. Also clamp modificationRange passed to the
detector pipeline so out-of-bounds values cannot reach ENRMWordsUtils.

Made-with: Cursor

* fix(ios): use controlled path for Cut to prevent formatting corruption

Route Cut through replaceSelectedTextWith:formattingRanges: instead of
UIKit's replaceRange:withText: (iOS) / insertText:replacementRange:
(macOS). The controlled path bypasses the delegate chain and calls
adjustForEditAtLocation: with exact parameters, eliminating timing
races that corrupt the formatting store on slower devices or low
power mode.

Made-with: Cursor

Author: hryhoriiK97

ios/input/ENRMInputTextView.mm

@@ -34,7 +34,7 @@ - (void)copy:(id)sender
 - (void)cut:(id)sender
 {
   [self copy:sender];
-  [self replaceRange:self.selectedTextRange withText:@""];
+  [self.markdownTextInput replaceSelectedTextWith:@"" formattingRanges:@[]];
 }
 
 - (void)paste:(id)sender
@@ -111,9 +111,7 @@ - (void)copy:(id)sender
 - (void)cut:(id)sender
 {
   [self copy:sender];
-  if (self.selectedRange.length > 0) {
-    [self insertText:@"" replacementRange:self.selectedRange];
-  }
+  [self.markdownTextInput replaceSelectedTextWith:@"" formattingRanges:@[]];
 }
 
 - (void)paste:(id)sender

ios/input/EnrichedMarkdownTextInput.h

@@ -11,6 +11,7 @@ NS_ASSUME_NONNULL_BEGIN
 - (CGSize)measureSize:(CGFloat)maxWidth;
 - (nullable NSString *)markdownForSelectedRange;
 - (void)pasteMarkdown:(NSString *)markdown;
+- (void)replaceSelectedTextWith:(NSString *)text formattingRanges:(NSArray *)ranges;
 - (void)scheduleRelayoutIfNeeded;
 @end
 

ios/input/EnrichedMarkdownTextInput.mm

@@ -41,7 +41,6 @@ - (void)setupTextView;
 - (void)applyFormatting;
 - (void)toggleInlineStyle:(ENRMInputStyleType)styleType;
 - (void)resetBaseTypingAttributes;
-- (void)replaceSelectedTextWith:(NSString *)text formattingRanges:(NSArray<ENRMFormattingRange *> *)ranges;
 @end
 
 @implementation EnrichedMarkdownTextInput {