docs: add known caveats to customFetch

Author: panva

docs/jwks/remote/variables/customFetch.md

@@ -9,6 +9,10 @@ Support from the community to continue maintaining and improving this module is
 When passed to [createRemoteJWKSet](../functions/createRemoteJWKSet.md) this allows the resolver
 to make use of advanced fetch configurations, HTTP Proxies, retry on network errors, etc.
 
+> [!NOTE]\
+> Known caveat: Expect Type-related issues when passing the inputs through to fetch-like modules,
+> they hardly ever get their typings inline with actual fetch, you should `@ts-expect-error` them.
+
 ## Examples
 
 Using [sindresorhus/ky](https://github.com/sindresorhus/ky) for retries and its hooks feature for

src/jwks/remote.ts

@@ -36,6 +36,10 @@ if (typeof navigator === 'undefined' || !navigator.userAgent?.startsWith?.('Mozi
  * When passed to {@link jwks/remote.createRemoteJWKSet createRemoteJWKSet} this allows the resolver
  * to make use of advanced fetch configurations, HTTP Proxies, retry on network errors, etc.
  *
+ * > [!NOTE]\
+ * > Known caveat: Expect Type-related issues when passing the inputs through to fetch-like modules,
+ * > they hardly ever get their typings inline with actual fetch, you should `@ts-expect-error` them.
+ *
  * @example
  *
  * Using [sindresorhus/ky](https://github.com/sindresorhus/ky) for retries and its hooks feature for