Closes #2143 Loosen `restrict_derivation()` assertion #2449

Job	Run time
Render README	0s
Documentation	0s
Validation	0s
Code Coverage / Get R version	2s
Links / Validate Links	7s
Check / (4.1)	6m 57s
Check / (4.2)	5m 59s
Lint / Get R version	2s
Check / (4.3)	5m 7s
Man Pages / Get R version	1s
Spelling / Get R version	2s
Code Style / Get R version	2s
Spelling / Spellcheck	1m 49s
Man Pages / Roxygen	1m 52s
Code Coverage / Test Coverage	4m 18s
Lint / Lint	5m 58s
Code Style / Code Style	2m 3s
Code Coverage / Generate badge for coverage	6s
	34m 25s

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