Fix UBSan failure in bulk text decompression

[akuzm]

Fix missing alignment handling, and also buffer size problems. We were not properly reporting the failures in the compression_algo tests, so didn't notice these problems. Add part of tests from "vector text predicates" PR to improve coverage.

https://github.com/timescale/timescaledb/actions/runs/7726479796/job/21064729212

Disable-check: force-changelog-file

[codecov]

Codecov Report

Attention: 18 lines in your changes are missing coverage. Please review.

Comparison is base (1502bad) 79.82% compared to head (252cd98) 79.78%.
Report is 4 commits behind head on main.

Files	Patch %	Lines
tsl/src/compression/array.c	45.45%	0 Missing and 6 partials ⚠️
tsl/test/src/decompress_arithmetic_test_impl.c	16.66%	3 Missing and 2 partials ⚠️
tsl/test/src/decompress_text_test_impl.c	16.66%	3 Missing and 2 partials ⚠️
tsl/src/compression/dictionary.c	0.00%	0 Missing and 1 partial ⚠️
tsl/src/compression/simple8b_rle_decompress_all.h	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6583      +/-   ##
==========================================
- Coverage   79.82%   79.78%   -0.04%     
==========================================
  Files         190      190              
  Lines       37148    37237      +89     
  Branches     9419     9441      +22     
==========================================
+ Hits        29652    29711      +59     
- Misses       3114     3137      +23     
- Partials     4382     4389       +7     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[github-actions]

@mahipv, @mkindahl: please review this pull request.

Powered by pull-review