Oscillators tests running out of memory

Nobody has claimed this yet.

This has been happening a bunch on PPA builds for 32-bit architectures (e.g., [this one](https://launchpadlibrarian.net/793311093/buildlog_ubuntu-bionic-armhf.macaulay2_1.24.11+git202505141601-0ppa202505110408~ubuntu18.04.1_BUILDING.txt.gz).)

```m2
-- capturing check(0, "Oscillators") -- 1.42224s elapsed
-- capturing check(1, "Oscillators") -- capture failed; retrying ...
-- running check(1, "Oscillators") -- 6.94268s elapsed
-- capturing check(2, "Oscillators") -- capture failed; retrying ...
-- running check(2, "Oscillators") -- 9.40938s elapsed
-- capturing check(3, "Oscillators") -- .637755s elapsed
-- capturing check(4, "Oscillators")Too many heap sections: Increase MAXHINCR or MAX_HEAP_SECTS
```

That test takes almost 20 seconds on my system, and there a few others that take a while, too:

```m2
-- capturing check(0, "Oscillators") -- .316898s elapsed
-- capturing check(1, "Oscillators") -- capture failed; retrying ...
-- running check(1, "Oscillators") -- 2.25018s elapsed
-- capturing check(2, "Oscillators") -- capture failed; retrying ...
-- running check(2, "Oscillators") -- 4.3104s elapsed
-- capturing check(3, "Oscillators") -- .585084s elapsed
-- capturing check(4, "Oscillators") -- 19.7782s elapsed
-- capturing check(5, "Oscillators") -- warning: experimental computation over inexact field begun
-- results not reliable (one warning given per session)
-- 10.5415s elapsed
-- capturing check(6, "Oscillators") -- 9.65044s elapsed
-- running check(7, "Oscillators") -- 3.81465s elapsed
-- running check(8, "Oscillators") -- 3.84548s elapsed
-- running check(9, "Oscillators") -- 30.3098s elapsed
-- capturing check(10, "Oscillators") -- 10.3501s elapsed
```

Start by running the Oscillators checks and compare their behavior on a 32-bit PPA-style build, using the reported timings and the MAXHINCR/MAX_HEAP_SECTS failure as the symptoms to investigate. Trace which check causes excessive memory use or runtime, then verify that the Oscillators test suite completes without heap-section exhaustion and with improved behavior on the affected architecture.

Written by the indexing model from the issue text.