fix(iOS): bad parameter type in toggleCancelButton search bar comma…

…nd (#1854)

## Description

Fixes #1853

Looks like I've made a typo while implemnenting
`toggleCancelButton:flag:` (flag has `BOOL *` type instead of just
`BOOL`) leading to compile errors as reported in #1853.

## Changes

Changed (fixed) the type of `flag` parameter from `BOOL *` to just plain
`BOOL`.


## Test code and steps to reproduce

See #1853 & try to build on macOS Catalyst

## Checklist

- [ ] Ensured that CI passes

ios/RNSSearchBar.mm

@@ -423,7 +423,7 @@ - (UIView *)view
   }];
 }
 
-RCT_EXPORT_METHOD(toggleCancelButton : (NSNumber *_Nonnull)reactTag flag : (BOOL *)flag)
+RCT_EXPORT_METHOD(toggleCancelButton : (NSNumber *_Nonnull)reactTag flag : (BOOL)flag)
 {
   [self.bridge.uiManager addUIBlock:^(__unused RCTUIManager *uiManager, NSDictionary *viewRegistry) {
     RNSSearchBar *searchBar = viewRegistry[reactTag];