astuple: forward filter and recurse into attrs nested in dict values #2201

Job	Run time
Build & verify package	22s
Check types using supported type checkers	20s
Verify dev env	8s
Run doctests & render changelog	20s
Tests on pypy-3.10	27s
Tests & Mypy on 3.11	43s
Tests & Mypy on 3.14	57s
Tests & Mypy on 3.12	47s
Tests & Mypy on 3.13	48s
Tests & Mypy on 3.9	38s
Tests & Mypy on 3.10	56s
Tests & Mypy on 3.15	1m 37s
Combine & check coverage	14s
Ensure everything required is passing for branch protection	4s
	8m 21s

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