Web Workers don't work when enforcing Trusted Types

[jprinaldi]

Describe the bug

When enforcing Trusted Types with the require-trusted-types-for CSP directive, Web Workers stop working and no existing Trusted Type policy can make them work, namely svelte-trusted-html and svelte-trusted-url.

Reproduction

https://stackblitz.com/edit/sveltejs-kit-template-default-pvqfrgpg

Logs

System Info

System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 22.22.0 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.8.2 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm
  npmPackages:
    @sveltejs/adapter-auto: 7.0.1 => 7.0.1 
    @sveltejs/kit: 2.57.1 => 2.57.1 
    @sveltejs/vite-plugin-svelte: 6.2.4 => 6.2.4 
    svelte: 5.55.3 => 5.55.3 
    vite: 7.2.2 => 7.2.2

Severity

blocking an upgrade

Additional Information

No response