Do not recompress segmentwise when default order by is empty

[natalya-aksman]

When we have compression where default order by is set to "", we cannot do meaningful segmentwise recompression. Therefore we will return error when segmentwise recompression is requested directly and will do full recompression when general compression is requested.

Fixes: #7748

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[codecov]

Codecov Report

Attention: Patch coverage is 78.57143% with 3 lines in your changes missing coverage. Please review.

Project coverage is 81.86%. Comparing base (59f50f2) to head (1eba81e).
Report is 803 commits behind head on main.

Files with missing lines	Patch %	Lines
tsl/src/compression/recompress.c	50.00%	0 Missing and 2 partials ⚠️
tsl/src/compression/api.c	85.71%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7789      +/-   ##
==========================================
+ Coverage   80.06%   81.86%   +1.80%     
==========================================
  Files         190      247      +57     
  Lines       37181    45442    +8261     
  Branches     9450    11364    +1914     
==========================================
+ Hits        29770    37203    +7433     
- Misses       2997     3766     +769     
- Partials     4414     4473      +59     

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[timescale-automation]

Automated backport to 2.18.x not done: cherry-pick failed.

Git status

HEAD detached at origin/2.18.x
You are currently cherry-picking commit d7c424441.
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Changes to be committed:
	new file:   .unreleased/pr_7789
	modified:   tsl/src/compression/create.c
	modified:   tsl/src/compression/recompress.c

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   tsl/src/compression/api.c
	both modified:   tsl/test/expected/recompress_chunk_segmentwise.out
	both modified:   tsl/test/sql/recompress_chunk_segmentwise.sql

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