Fix CORS error when loading fonts in 2c (#3163)

Author: SamyPesse

.github/workflows/deploy-preview.yaml

@@ -200,7 +200,7 @@ jobs:
         name: Visual Testing v2 (Cloudflare)
         needs: deploy-v2-cloudflare
         timeout-minutes: 10
-        if: startsWith(github.head_ref || github.ref_name, 'cloudflare/')
+        if: startsWith(github.head_ref || github.ref_name, 'cloudflare/') || github.ref == 'refs/heads/main'
         steps:
             - name: Checkout
               uses: actions/checkout@v4
@@ -263,7 +263,7 @@ jobs:
         name: Visual Testing Customers v2 (Cloudflare)
         needs: deploy-v2-cloudflare
         timeout-minutes: 8
-        if: startsWith(github.head_ref || github.ref_name, 'cloudflare/')
+        if: startsWith(github.head_ref || github.ref_name, 'cloudflare/') || github.ref == 'refs/heads/main'
         steps:
             - name: Checkout
               uses: actions/checkout@v4

packages/gitbook/public/_headers

@@ -3,3 +3,5 @@
 /~gitbook/static/*
   cache-control: public,max-age=31536000,immutable
   Access-Control-Allow-Origin: *
+/_next/static/*
+  Access-Control-Allow-Origin: *