Fix/cnki retry for #1383

[Chapoly1305]

This pull request improves the resilience of the CNKI translation service by introducing a generic retry mechanism for HTTP requests. The main changes are the addition of a reusable requestWithRetry helper and its integration into the token fetching and translation request flows.

Reliability improvements:

• Added a new requestWithRetry helper function to handle automatic retries for asynchronous operations, improving robustness against transient network errors.
• Updated the translation request in processTranslation to use requestWithRetry, retrying failed requests up to two times with exponential backoff.
• Modified the getToken function to use requestWithRetry for token fetching, adding retries to the token acquisition process.

[Chapoly1305]

Note, I need someone in china mainland help to test this change. My native IP route me to oversea domain which led to 404. I tried to set with dns resolve to mainland service, but their server seems down.