Actually disable the fontations code flag since we don't build that library. Otherwise chromium crashes with a null dereference

--- src/third_party/blink/renderer/platform/runtime_enabled_features.json5.orig	2025-01-06 22:04:18.385199599 +0100
+++ src/third_party/blink/renderer/platform/runtime_enabled_features.json5	2025-01-14 19:49:21.336897930 +0100
@@ -2103,7 +2103,6 @@
     },
     {
       name: "FontationsForSelectedFormats",
-      status: "stable",
     },
     {
       name: "FontFamilyPostscriptMatchingCTMigration",