test: fix list_files_and_parse_table_name path issue on windows

[evenyag]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

This PR converts the temp dir path to an object store style path in list_files_and_parse_table_name.

The C:\Users\abc\temp becomes C:/Users/abc/temp which is the supported form of us.

Users who'd like to use copy database on Windows should use unix-like path. See #3195

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.

Refer to a related PR or issue link (optional)

fixes #3301

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f087a84) 85.24% compared to head (c22aada) 84.58%.
Report is 11 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3349      +/-   ##
==========================================
- Coverage   85.24%   84.58%   -0.67%     
==========================================
  Files         882      887       +5     
  Lines      144085   145144    +1059     
==========================================
- Hits       122823   122763      -60     
- Misses      21262    22381    +1119     

[v0y4g3r]

LGTM