Add "Replace existing signature" to the macOS export (enabled by default).

(cherry picked from commit 9e18fce9431b25825742e13d03c2839a5060d4ec)

platform/osx/export/export.cpp

@@ -139,6 +139,7 @@ void EditorExportPlatformOSX::get_export_options(List<ExportOption> *r_options)
 	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "codesign/identity", PROPERTY_HINT_PLACEHOLDER_TEXT, "Type: Name (ID)"), ""));
 	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "codesign/timestamp"), true));
 	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "codesign/hardened_runtime"), true));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "codesign/replace_existing_signature"), true));
 	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "codesign/entitlements/custom_file", PROPERTY_HINT_GLOBAL_FILE, "*.plist"), ""));
 
 	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "codesign/entitlements/allow_jit_code_execution"), false));
@@ -423,6 +424,10 @@ Error EditorExportPlatformOSX::_code_sign(const Ref<EditorExportPreset> &p_prese
 
 	args.push_back("-v"); /* provide some more feedback */
 
+	if (p_preset->get("codesign/replace_existing_signature")) {
+		args.push_back("-f");
+	}
+
 	args.push_back(p_path);
 
 	String str;