Tests

feat(autogram): Add `StructuredSparseTensor`. #1993

Job	Run time
Run (most) tests with default install	1m 13s
Run tests with full install (3.10, ubuntu-latest)	1m 15s
Run tests with full install (3.11, ubuntu-latest)	1m 14s
Build doc	47s
Run tests with full install (3.12, macOS-latest)	40s
Run mypy	1m 1s
Run tests with full install (3.13, ubuntu-latest)	1m 19s
Run tests with full install (3.11, windows-latest)	1m 23s
Run tests with full install (3.10, windows-latest)	2m 5s
Run tests with full install (3.10, macOS-latest)	52s
Run tests with full install (3.12, windows-latest)	1m 40s
Run tests with full install (3.12, ubuntu-latest)	1m 12s
Run tests with full install (3.11, macOS-latest)	59s
Run tests with full install (3.13, windows-latest)	1m 51s
Run tests with full install (3.13, macOS-latest)	1m 26s
	18m 57s

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