fix(types): make Workers AI reasoning types suggestions instead of restrictions

Regenerated from the SDK generator (cloudflare/ai/sdk!1778) against
production model metadata. No code that type-checked before is rejected:

- `AiReasoningEffortHint<Suggested>` suggests a model's supported efforts
  in editors but accepts any string. Shared Chat Completions
  `reasoning_effort` and Responses request `reasoning.effort` use it too.
- Response types (`Reasoning`, `ReasoningEffort`, outputs) are unchanged.
- Models with reasoning metadata get `<Model>_ChatInput` /
  `_ChatTemplateKwargs` (and `_ResponsesInput` / `_Reasoning` for gpt-oss)
  interfaces extending the shared types with per-model docs: supported
  levels, aliases, defaults, and whether reasoning can be disabled.
- `enable_thinking` stays `boolean` for every model.
- Adds the public `@cf/zai-org/glm-5.3` model.
- Keeps `Base_Ai_Cf_Google_Gemma_4_26B_A4B_IT` as a deprecated alias of the
  generated `..._It` class.

Author: KastanDay