CoreServices is not available on iOS. Don't add it as a dependency.

runtime/bin/BUILD.gn

Index: runtime/bin/BUILD.gn
diff --git a/runtime/bin/BUILD.gn b/runtime/bin/BUILD.gn
index 549807b8ff385da0cd227808c59288c9b9740ad6..b2d1db014abd4f1af768043935c441631e8131c3 100644
--- a/runtime/bin/BUILD.gn
+++ b/runtime/bin/BUILD.gn
@@ -374,9 +374,14 @@ source_set("embedded_dart_io") {
   if (is_mac || is_ios) {
     libs = [
       "CoreFoundation.framework",
-      "CoreServices.framework",
       "Security.framework",
     ]
+
+    if (is_mac) {
+      libs += [
+        "CoreServices.framework",
+      ]
+    }
   } else if (defined(is_fuchsia) && is_fuchsia) {
     defines += [
       "DART_IO_SECURE_SOCKET_DISABLED"