Fix isSearchActive crash in wilde

Summary:
This responder was added to android but not iOS, and was always being called during layout init.
Fixing by implementing it in iOS too.

Reviewed By: priteshrnandgaonkar

Differential Revision: D10489411

fbshipit-source-id: ef711dc5f54f52dd76db1245d07f9007fc846532

iOS/Plugins/FlipperKitLayoutPlugin/FlipperKitLayoutPlugin/FlipperKitLayoutPlugin.mm

@@ -108,6 +108,10 @@
     FlipperPerformBlockOnMainThread(^{ [weakSelf onCallSetSearchActive: [params[@"active"] boolValue] withConnection: connection]; });
   }];
 
+  [connection receive:@"isSearchActive" withBlock:^(NSDictionary *params, id<FlipperResponder> responder) {
+    FlipperPerformBlockOnMainThread(^{ [weakSelf onCallIsSearchActiveWithConnection: responder]; });
+  }];
+
   [connection receive:@"isConsoleEnabled" withBlock:^(NSDictionary *params, id<FlipperResponder> responder) {
     FlipperPerformBlockOnMainThread(^{ [responder success: @{@"isEnabled": @NO}];});
   }];
@@ -238,6 +242,10 @@
   }
 }
 
+- (void)onCallIsSearchActiveWithConnection:(id<FlipperResponder>)responder {
+  [responder success: @{ @"isSearchActive": @NO }];
+}
+
 - (void)invalidateNode:(id<NSObject>)node {
   SKNodeDescriptor *descriptor = [_descriptorMapper descriptorForClass: [node class]];
   if (descriptor == nil) {