Update compile size benchmarks to include --split-debug-info and --tree-shake-icons (#50313)

dev/devicelab/lib/tasks/perf_tests.dart

@@ -409,6 +409,8 @@ class CompileTest {
     switch (deviceOperatingSystem) {
       case DeviceOperatingSystem.ios:
         options.insert(0, 'ios');
+        options.add('--tree-shake-icons');
+        options.add('--split-debug-info=infos/');
         watch.start();
         await flutter('build', options: options);
         watch.stop();
@@ -423,6 +425,7 @@ class CompileTest {
         options.insert(0, 'apk');
         options.add('--target-platform=android-arm');
         options.add('--tree-shake-icons');
+        options.add('--split-debug-info=infos/');
         watch.start();
         await flutter('build', options: options);
         watch.stop();