feat: improve type safety in command helpers

Improved the type safety of the `pollForToken` function in `src/utils/command-helpers.ts` by removing the `@ts-expect-error` and adding a type guard to safely handle the error object.

Co-authored-by: serhalp <1377702+serhalp@users.noreply.github.com>

Author: google-labs-jules[bot]

package-lock.json

@@ -69,7 +69,7 @@
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