fix: make request_builder_hook configurable

[mocchira]

This PR makes request_builder_hook configurable for https://github.com/tailor-inc/platform-core-services/issues/8902

[Copilot]

Pull Request Overview

This PR makes the request_builder_hook configurable by enabling it to be passed through from WebOptions to the deno_fetch extension, addressing the TODO comment that previously indicated it wasn't being used.

• Changes the error type from deno_core::error::AnyError to deno_error::JsErrorBox in hook signatures
• Removes the TODO comment and enables the request_builder_hook to be passed from WebOptions to deno_fetch
• Updates import statements to use the new error type

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/runtime_builder.rs	Updates the hook parameter type in with_web_request_builder_hook method
src/ext/web/options.rs	Changes the error type in WebOptions struct and updates imports
src/ext/web/mod.rs	Enables the request_builder_hook to be passed through to deno_fetch instead of being hardcoded to None

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[remiposo]

LGTM