Support `workers types` Ai type

[zhawtof]

Putting env.AI as a parameter no longer works with Cloudflare Workers V4 Typescript. Now that we're generating types, this no longer is accepting the proper types for AI

await runWithTools(env.AI, '@cf/meta/llama-3.3-70b-instruct-fp8-fast', ...

Argument of type 'Ai<AiModels>' is not assignable to parameter of type 'import(".../node_modules/.pnpm/@cloudflare+workers-types@4.20250327.0/node_modules/@cloudflare/workers-types/index").Ai<import(".../node_modules/.pnpm/@cloudflare+workers-types@4.20250327.0/node_modules/@cloudflare/workers-types/index").AiModels>

[eli-front]

For now I'm just casting as any, but this is needed