Added biometricsAuthenticationFailed delegate callback

Author: ddaddy

LTHPasscodeViewController/LTHPasscodeViewController.h

@@ -22,6 +22,10 @@
  @brief Called when the passcode was entered successfully.
  */
 - (void)passcodeWasEnteredSuccessfully;
+/**
+ @brief Called when the TouchID/FaceID fails or is cancelled.
+ */
+- (void)biometricsAuthenticationFailed;
 /**
  @brief Called when the passcode was enabled.
  */

LTHPasscodeViewController/LTHPasscodeViewController.m

@@ -376,6 +376,11 @@ - (void)_setupFingerPrint {
 
                                               if (error || !success) {
                                                   [self _handleBiometricsFailureAndDisableIt:false];
+                                                  
+                                                  if ([self.delegate respondsToSelector: @selector(biometricsAuthenticationFailed)]) {
+                                                      [self.delegate performSelector: @selector(biometricsAuthenticationFailed)];
+                                                  }
+                                                  
                                                   return;
                                               }