Enable xcode cache cleanup for a few days. (#118419)

This is to ensure the xcode caches get back to a normal state as they
seem to have gotten into a bad state after updating the xcode version.

Bug: https://github.com/flutter/flutter/issues/118324
Bug: https://github.com/flutter/flutter/issues/118327
Bug: https://github.com/flutter/flutter/issues/118328

.ci.yaml

@@ -80,6 +80,7 @@ platform_properties:
       device_type: none
       cpu: x86 # TODO(jmagman): https://github.com/flutter/flutter/issues/112130
       xcode: 14a5294e # xcode 14.0 beta 5
+      cleanup_xcode_cache: "true"
   mac_arm64:
     properties:
       dependencies: >-
@@ -90,6 +91,7 @@ platform_properties:
       device_type: none
       cpu: arm64
       xcode: 14a5294e # xcode 14.0 beta 5
+      cleanup_xcode_cache: "true"
   mac_x64:
     properties:
       dependencies: >-
@@ -100,6 +102,7 @@ platform_properties:
       device_type: none
       cpu: x86
       xcode: 14a5294e # xcode 14.0 beta 5
+      cleanup_xcode_cache: "true"
   mac_android:
     properties:
       dependencies: >-