Rearrange environment layout for tests #645

Job	Run time
Non-JIT test coverage	4m 44s
Vanilla Python 3.11 on ubuntu-latest	5m 45s
Vanilla Python 3.11 on macos-latest	3m 13s
Demos, examples, and docs	2m 35s
Conda Python py311 on ubuntu-latest	5m 28s
Evaluation-based tests	8m 56s
Vanilla Python 3.12 on ubuntu-latest	6m 47s
Conda Python py311 on macos-latest	3m 15s
Vanilla Python 3.12 on macos-latest	3m 29s
Conda Python py311 on windows-latest	9m 12s
FunkSVD tests on Python py311	42s
Minimal dependency tests for FunkSVD	5m 59s
Conda Python py312 on ubuntu-latest	5m 36s
FunkSVD tests on Python py312	35s
Conda Python py312 on macos-latest	3m 19s
HPF bridge tests on Python py311	37s
Conda Python py312 on windows-latest	9m 5s
HPF bridge tests on Python py312	35s
Implicit bridge tests on Python py311	34s
Minimal dependency tests for Implicit	5m 44s
Implicit bridge tests on Python py312	55s
Minimal dependency tests	5m 43s
Test suite results	20s
	1h 33m 8s

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