[Policy] Move DisableSafeBrowsingProceedAnyway to future_on

Moves the DisableSafeBrowsingProceedAnyway from supported_on iOS 85 to
future_on. This is the only policy that wasn't moved to future_on, other
than EnableExperimentalPolicies. I believe it was an oversight. Without
this change, the enterprise documentation page for the policy has a
visual bug when displaying supported versions:

https://screenshot.googleplex.com/7ZxKRy3mCmgCyut

BYPASS_POLICY_COMPATIBILITY_CHECK="Moving the policy to future_on, since it hasn't truly been released"

Bug: 1129888
Change-Id: I215afe151edc7379b60c85dcf2e1b31be00d625c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2416852
Commit-Queue: Guillaume Jenkins <gujen@google.com>
Reviewed-by: Owen Min <zmin@chromium.org>
Reviewed-by: Julian Pastarmov <pastarmovj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#808385}

components/policy/resources/policy_templates.json

@@ -10111,9 +10111,9 @@
       'supported_on': [
         'chrome.*:22-',
         'chrome_os:22-',
-        'android:30-',
-        'ios:85-'
+        'android:30-'
       ],
+      'future_on': ['ios'],
       'features': {
         'dynamic_refresh': True,
         'per_profile': True,