Make LieAlgebraModule tests better gc-able

[lgoettgens]

Adresses the memory issues in 1.11-nightly and nightly tests reported in #3831 (comment).

The excessive memory seems to come from the GAP iso adaption in #3831. Before this PR, the whole computation was done in GAP, the plan for the future is to not need GAP at all, but in the current state a lot of data has to be transferred (once per testcase).
If seems to help to run each testcase in its single scope to make everything garbage collectable right after the testcase ended (instead of currently keeping everything in memory until the @testset is over).
Furthermore I disabled the longest running testcase. The correctness of everything should still be covered by the other cases.

Let's hope that all of this helps with the CI failures.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.99%. Comparing base (8d957f3) to head (125d206).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3913   +/-   ##
=======================================
  Coverage   83.99%   83.99%           
=======================================
  Files         591      591           
  Lines       81358    81380   +22     
=======================================
+ Hits        68333    68352   +19     
- Misses      13025    13028    +3     

Files	Coverage Δ
...rimental/LieAlgebras/test/LieAlgebraModule-test.jl	100.00% <100.00%> (ø)

... and 3 files with indirect coverage changes

[benlorenz]

Thanks for the quick improvements, memory usage is still quite large, but both jobs did succeed on the first try. I did a restart of the whole job to be sure.

For 1.11:

GC: pause 3754.52ms. collected 6522.264534MB. incr 
Heap stats: bytes_mapped 9474.31 MB, bytes_resident 9302.19 MB,
heap_size 9856.99 MB, heap_target 13168.92 MB, Fragmentation 0.295
Test Summary:                | Pass  Broken  Total     Time
LieAlgebras.LieAlgebraModule | 7431      49   7480  1m16.7s
-> Testing experimental/LieAlgebras/test/LieAlgebraModule-test.jl took: runtime 51.598 seconds + compilation 26.46 seconds + recompilation 0.0 seconds, 29.259 GiB

and nightly:

GC: pause 3664.34ms. collected 6586.752552MB. incr 
Heap stats: bytes_mapped 9602.34 MB, bytes_resident 9410.86 MB,
heap_size 9853.67 MB, heap_target 13062.80 MB, Fragmentation 0.296
Test Summary:                | Pass  Broken  Total     Time
LieAlgebras.LieAlgebraModule | 7431      49   7480  1m17.2s
-> Testing experimental/LieAlgebras/test/LieAlgebraModule-test.jl took: runtime 52.564 seconds + compilation 25.279 seconds + recompilation 0.721 seconds, 29.219 GiB

Previously this file had about 56 GiB of allocations when it did succeed.

Maybe we should also move this test-file to the long subset, which includes the more demanding tests and usually finishes first anyway. (Just add it to test_large in test/runtests.jl).

[lgoettgens]

I'll wait for this test run to finish and then put the line into test_long. If all then three CI runs succeed without problems, this is good enough for me for the time being.

And I'll move the rewrite of the second part (to no longer need the GAP conversion) a bit up on my priority list.

[benlorenz]

thanks!