Log only if compression ratio warnings enabled

[antekresic]

No need for logging at DEBUG1 level. Only
log if the feature is enabled and compression
ratio is under the threshold.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 82.34%. Comparing base (46dcc64) to head (0ba2d9a).
Report is 27 commits behind head on main.

Files with missing lines	Patch %	Lines
tsl/src/compression/api.c	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8145      +/-   ##
==========================================
+ Coverage   82.26%   82.34%   +0.08%     
==========================================
  Files         255      255              
  Lines       47723    47696      -27     
  Branches    12030    12027       -3     
==========================================
+ Hits        39260    39276      +16     
- Misses       3647     3661      +14     
+ Partials     4816     4759      -57     

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[svenklemm]

Probably should get changelog entry

[mkindahl]

Not sure why we had the DEBUG1 in the first place, but this looks fine since the warning can be disabled with a GUC.