fix(bench): fix the overlapped name and error in profile generation

[keyangds]

Closes #

📑 Description

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• All the tests have passed
• Branch name follows type/descript (e.g. feature/add-llm-agents)
• Ready for code review

ℹ Additional Information

[codecov]

Codecov Report

Attention: Patch coverage is 81.48148% with 5 lines in your changes missing coverage. Please review.

Project coverage is 73.03%. Comparing base (820fbb9) to head (1ea3a58).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
research_bench/create_bench_from_conference.py	0.00%	2 Missing ⚠️
research_town/dbs/db_profile.py	50.00%	2 Missing ⚠️
research_town/utils/profile_collector.py	90.90%	1 Missing ⚠️

@@            Coverage Diff             @@
##             main     #827      +/-   ##
==========================================
- Coverage   73.29%   73.03%   -0.27%     
==========================================
  Files          80       80              
  Lines        3367     3401      +34     
==========================================
+ Hits         2468     2484      +16     
- Misses        899      917      +18     

Files with missing lines	Coverage Δ
tests/dbs/test_dbs.py	100.00% <100.00%> (ø)
tests/utils/test_profile_collector.py	100.00% <100.00%> (ø)
research_town/utils/profile_collector.py	89.70% <90.90%> (-8.30%)	⬇️
research_bench/create_bench_from_conference.py	0.00% <0.00%> (ø)
research_town/dbs/db_profile.py	95.38% <50.00%> (-4.62%)	⬇️

... and 1 file with indirect coverage changes