Add survey design support to EfficientDiD covariates (DR) path #809

Job	Run time
Pure Python Fallback	58m 2s
Rust Unit Tests (ubuntu-24.04-arm)	1m 26s
Rust Unit Tests (macos-latest)	1m 27s
Rust Unit Tests (ubuntu-latest)	1m 27s
Rust Unit Tests (windows-latest)	2m 13s
Python Tests (ubuntu-latest, py3.13)	40m 37s
Python Tests (macos-latest, py3.13)	18m 8s
Python Tests (windows-latest, py3.13)	36m 47s
Python Tests (ubuntu-24.04-arm, py3.13)	19m 8s
Python Tests (windows-latest, py3.11)	36m 28s
Python Tests (ubuntu-latest, py3.11)	39m 30s
Python Tests (ubuntu-24.04-arm, py3.11)	18m 34s
Python Tests (macos-latest, py3.11)	18m 25s
	4h 52m 12s

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