Add --deep code signing flag to Benchmark app to sign the Tests bundl… (pytorch#10574)

Author: shoumikhin

extension/benchmark/apple/Benchmark/Benchmark.xcodeproj/project.pbxproj

@@ -577,6 +577,7 @@
 				"LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = "@executable_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = 1.0;
+                                OTHER_CODE_SIGN_FLAGS = "--deep";
 				PRODUCT_BUNDLE_IDENTIFIER = org.pytorch.executorch.Benchmark;
 				PRODUCT_NAME = Benchmark;
 				REGISTER_APP_GROUPS = NO;
@@ -611,6 +612,7 @@
 				"LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = "@executable_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = 1.0;
+                                OTHER_CODE_SIGN_FLAGS = "--deep";
 				PRODUCT_BUNDLE_IDENTIFIER = org.pytorch.executorch.Benchmark;
 				PRODUCT_NAME = Benchmark;
 				REGISTER_APP_GROUPS = NO;