[Impeller] Specify the min simulator version. (flutter/engine#36809)

engine/src/flutter/impeller/tools/build_metal_library.py

@@ -100,15 +100,19 @@ def main():
         '-Oz',
         # Allow aggressive, lossy floating-point optimizations.
         '-ffast-math',
+        # limiting to ios-metal1.2 disables shader debug symbols, only
+        # enabling these in optimize mode.
+        # see https://github.com/flutter/flutter/issues/106066
+        '--std=ios-metal1.2',
     ]
     if args.platform == 'ios':
-      # limiting to ios-metal1.2 disables shader debug symbols, only
-      # enabling these in optimize mode.
-      # see https://github.com/flutter/flutter/issues/106066
       command += [
-          '--std=ios-metal1.2',
           '-mios-version-min=10.0',
       ]
+    elif args.platform == 'ios-simulator':
+      command += [
+          '-miphonesimulator-version-min=11.0',
+      ]
   else:
     command += [
         # Embeds both sources and driver options in the output. This aids in