Fixed crash when textinput's default value exceeds maxLength (#24084)

Summary:
Bug comes from #23545, if `allowedLength < 0`, it would crash if `text.length > 1`.

cc. cpojer

[iOS] [Fixed] - Fixed crash when textinput's default value exceeds maxLength
Pull Request resolved: #24084

Differential Revision: D14562719

Pulled By: cpojer

fbshipit-source-id: 87ed930e35b8fa889d8b04829795fa46b7787b07

Libraries/Text/TextInput/RCTBaseTextInputView.m

@@ -373,9 +373,9 @@ - (BOOL)textInputShouldChangeTextInRange:(NSRange)range replacementText:(NSStrin
   }
 
   if (_maxLength) {
-    NSInteger allowedLength = _maxLength.integerValue - backedTextInputView.attributedText.string.length + range.length;
+    NSInteger allowedLength = MAX(_maxLength.integerValue - (NSInteger)backedTextInputView.attributedText.string.length + (NSInteger)range.length, 0);
 
-    if (allowedLength < 0 || text.length > allowedLength) {
+    if (text.length > allowedLength) {
       // If we typed/pasted more than one character, limit the text inputted.
       if (text.length > 1) {
         // Truncate the input string so the result is exactly maxLength