Phase 4: Survey support for ImputationDiD, TwoStageDiD, CallawaySantAnna #550

Job	Run time
Rust Unit Tests (macos-latest)	1m 20s
Pure Python Fallback	46m 36s
Python Tests (ubuntu-latest, py3.11)	38m 44s
Rust Unit Tests (ubuntu-24.04-arm)	1m 39s
Python Tests (macos-latest, py3.11)	17m 21s
Rust Unit Tests (ubuntu-latest)	1m 16s
Python Tests (ubuntu-latest, py3.13)	39m 24s
Rust Unit Tests (windows-latest)	2m 11s
Python Tests (macos-latest, py3.13)	16m 16s
Python Tests (windows-latest, py3.13)	37m 18s
Python Tests (windows-latest, py3.11)	36m 47s
Python Tests (ubuntu-24.04-arm, py3.13)	18m 59s
Python Tests (ubuntu-24.04-arm, py3.11)	17m 42s
	4h 35m 33s

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