[Feature Request] Enhance automatic translation

## Describe the solution you'd like

Automatic translation CI was implemented on #716, but the script translates the entire file even though the diff is a few characters, which causes not only heavier PR burden but also confusing translation such as #788.

## Why the solution needed

To make the process lighter.

## Additional context

N/A

## Implementation feasibility

Are you willing to collaborate with us to discuss the solution, decide on the approach, and assist with the implementation?

- [x] Yes, I am able to implement the feature and create a pull request.
- [ ] No, I am unable to implement the feature, but I am open to discussing the solution.

Review the automatic translation CI introduced in issue #716 and the confusing translation described in issue #788. Determine how the workflow identifies changed content and define done as translating only the relevant diff while avoiding the unnecessary PR burden and confusing output described here.

Written by the indexing model from the issue text.