Fix bug: Fixed a problem that was overwritten and not inputted when entering Korean

[2h-kim]

The part where Korean is separated and entered in CVAT standard workspace has been fixed in PR (https://github.com/opencv/cvat/pull/6916).

But in case of Attribuite annotation workspace, it confirmed that the same problem still occurred and corrected it similar to the PR above.

Motivation and context

How has this been tested?

Checklist

• [x] I submit my changes into the develop branch
• [x] I have created a changelog fragment
• [ ] I have updated the documentation accordingly
• [ ] I have added tests to cover my changes
• [ ] I have linked related issues (see GitHub docs)
• [ ] I have increased versions of npm packages if it is necessary (cvat-canvas, cvat-core, cvat-data and cvat-ui)

License

• [ ] I submit my code changes under the same MIT License that covers the project. Feel free to contact the maintainers if that's a concern.

[2h-kim]

Below is my test case when i using korean annotation in Attribuite annotation workspace. I'm unsure how to write test codes for the UI, so I'm attaching the results of the tests conducted on the UI below.

Before

After

[bsekachev]

Hello

Thanks for the contribution, I did minor changes, so, please the PR is still working for you.

[bsekachev]

And please, check in PR description: I submit my code changes under the same [MIT License](https://github.com/opencv/cvat/blob/develop/LICENSE) that covers the project.

Otherwise we will not be able to accept it.

[codecov[bot]]

Codecov Report

Merging #7380 (786c823) into develop (7286d65) will increase coverage by 0.01%. The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #7380      +/-   ##
===========================================
+ Coverage    83.52%   83.54%   +0.01%     
===========================================
  Files          372      372              
  Lines        39666    39666              
  Branches      3718     3718              
===========================================
+ Hits         33131    33137       +6     
+ Misses        6535     6529       -6     

Components	Coverage Δ
cvat-ui	79.43% <ø> (+0.03%)	:arrow_up:
cvat-server	87.31% <ø> (ø)

[2h-kim]

@bsekachev Thanks for update pull request. I tried again and made sure it worked fine