[Passwords] Unexpire Password Check and FOAS Flags

Bug: None
Change-Id: Ibbf4d41ff940c785b3c14965063f6258d183cedf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2506183
Commit-Queue: Jan Wilken Dörrie <jdoerrie@chromium.org>
Commit-Queue: Friedrich [CET] <fhorschig@chromium.org>
Auto-Submit: Jan Wilken Dörrie <jdoerrie@chromium.org>
Reviewed-by: Friedrich [CET] <fhorschig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822203}

chrome/browser/flag-metadata.json

@@ -2598,7 +2598,7 @@
   {
     "name": "fill-on-account-select",
     "owners": [ "jdoerrie" ],
-    "expiry_milestone": 87
+    "expiry_milestone": 90
   },
   {
     "name": "filling-passwords-from-any-origin",
@@ -3723,7 +3723,7 @@
   {
     "name": "password-check",
     "owners": [ "jdoerrie", "vasilii" ],
-    "expiry_milestone": 87
+    "expiry_milestone": 90
   },
   {
     "name": "password-scripts-fetching",