Add more info in the error message in downgrade detection

[ahrtr]

Add more info in the error message.

Also read #13405 (comment)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.74%. Comparing base (0966b4d) to head (2830237).
Report is 8 commits behind head on main.

Additional details and impacted files

Files with missing lines	Coverage Δ
server/storage/schema/schema.go	100.00% <100.00%> (ø)

... and 20 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #19081      +/-   ##
==========================================
+ Coverage   68.71%   68.74%   +0.03%     
==========================================
  Files         420      420              
  Lines       35640    35641       +1     
==========================================
+ Hits        24489    24503      +14     
+ Misses       9723     9709      -14     
- Partials     1428     1429       +1     

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This pull-request has been approved by: ahrtr, serathius

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[serathius]

Right, maybe we could make it a warning as the procedure is repeating and inform user that it might happen and we will try again.

[ahrtr]

maybe we could make it a warning as the procedure

Makes sense to change this specific case as a warning. But there is a long call stack between generating the error/warning message and printing it as an error log. There are multiple reasons for the error log, we can't just change it as a warning log.