Stop loading all installed GAP packages

[antonio-rojas]

On a fresh run of the GAP interface, Sage caches a GAP workspace which loads every single GAP package on the system. While this might be OK with Sage's trimmed-down version of gap_packages, if using a system GAP install
with all optional packages installed this can take a massive amount of memory (~1GB with all packages included in the 4.11.1 tarball), which in many casses surpasses the default gap_memory_pool_size value, causing crashes. This will become a common issue once #29644 is merged.

Possible solutions:

1. Don't preload packages in Sage and let GAP load its default list of packages

2. Load a hardcoded list of packages (such as those installed by the gap and gap_packages spkg's)

CC: @dimpase

Component: packages: standard

Issue created by migration from https://trac.sagemath.org/ticket/31761

[antonio-rojas]

Description changed:

--- 
+++ 
@@ -2,6 +2,8 @@
 with all optional packages installed this can take a massive amount of memory (~1GB with all packages included in the 4.11.1 tarball), which in many casses surpasses the default gap_memory_pool_size value, causing crashes. This will become a common issue once #29644 is merged.
 
 Possible solutions:
+
 1) Don't preload packages in Sage and let GAP load its default list of packages
+
 2) Load a hardcoded list of packages (such as those installed by the gap and gap_packages spkg's)
 

[antonio-rojas]

comment:2

The second solution is essentially reverting b994921