Fix file matching in annotation import for multiple dots in filenames

[zhiltsov-max]

Motivation and context

Fixes #6319

• Fixed invalid dataset root search, leading to invalid file matching
• Restored detailed dataset import error messages
• Added tests

How has this been tested?

Checklist

• I submit my changes into the develop branch
• I have added a description of my changes into the CHANGELOG file
• 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.

[zhiltsov-max]

@yf-yang, could you please check and confirm this solution works for you?

You can launch this version this way:

git clone https://github.com/opencv/cvat
cd cvat
git checkout zm/fix-file-matching
docker compose -f docker-compose.yml -f docker-compose.dev.yml up -d --build

[codecov]

Codecov Report

Merging #6350 (a585d6c) into develop (d950d24) will increase coverage by 0.85%.
The diff coverage is 87.50%.

@@             Coverage Diff             @@
##           develop    #6350      +/-   ##
===========================================
+ Coverage    80.04%   80.89%   +0.85%     
===========================================
  Files          332      332              
  Lines        38438    38443       +5     
  Branches      6923     6925       +2     
===========================================
+ Hits         30767    31098     +331     
+ Misses        7355     7029     -326     
  Partials       316      316              

Components	Coverage Δ
cvat-ui	75.08% <ø> (+1.71%)	⬆️
cvat-server	86.28% <87.50%> (+0.04%)	⬆️

[yf-yang]

Just saw it, I'll give it a try, thanks!

[yf-yang]

@zhiltsov-max It works as expected, thank you 😄!

[azhavoro]

@zhiltsov-max Could you add a note to the changelog?