Improve detection & usage of deno/bun

[xenova]

Closes #1332

• Uses node: prefixes for built-in libraries, ensuring standardization across node, bun, and deno runtimes
• Disable browser cache by default in Deno runtime (because the web cache API is available, but our URLs are not valid because we are using relative file paths due to the filesystem access we have)

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[xenova]

For posterity, I was working on improving cloudflare worker integration, but I wasn't able to get it working. Here are things I learned (mainly for future me):

1. You can use conditional exports that cloudflare workers will use specifically:

  "exports": {
    ...
    "worker": {
      "types": "./types/transformers.d.ts",
      "default": "./dist/transformers.js"
    },
    ...
  },

2. Cloudflare workers don't support relative URLs (e.g., new URL('.') is invalid)
3. Cloudflare workers don't support .node addon binaries (Node Addon binaries in Cloudflare Workers? cloudflare/workerd#1905 (comment)). This is unlikely to change in future.
4. Cloudflare workers disable wasm code generation ([🐛 Bug]: WebAssembly.instantiate(): Wasm code generation disallowed by embedder cloudflare/next-on-pages#704) - this is a security consideration and is unlikely to change in future.
5. You can detect cloudflare worker environment simply with typeof globalThis.Cloudflare !== 'undefined'