fix: Correct the logic for tagged field defaults #656

Job	Run time
Integration tests (3.11)	56s
Roundtrip tests (3.11)	53s
Unit tests (3.11)	48s
Integration tests (3.12)	1m 1s
Roundtrip tests (3.12)	1m 2s
Unit tests (3.12)	1m 9s
Java tests (3.11)	1m 13s
Check schema	1m 22s
Java tests (3.12)	1m 17s
Build Sphinx Docs	25s
Check packaging metadata / Build and check package metadata	19s
Static analysis / Run pre-commit checks	54s
	11m 19s

Provide feedback