Disable gradle_plugin_light_apk_test. (#80072)

dev/prod_builders.json

@@ -880,7 +880,7 @@
       "name": "Mac gradle_plugin_light_apk_test",
       "repo": "flutter",
       "task_name": "mac_gradle_plugin_light_apk_test",
-      "flaky": false
+      "flaky": true
     },
     {
       "name": "Mac module_custom_host_app_name_test",

dev/try_builders.json

@@ -690,7 +690,7 @@
       "name": "Windows gradle_plugin_light_apk_test",
       "repo": "flutter",
       "task_name": "win_gradle_plugin_light_apk_test",
-      "enabled": true,
+      "enabled": false,
       "run_if": ["dev/**", "bin/**"]
     },
     {