fix: swallow exceptions on is_model #877

Job	Run time
check-manifest	9s
test ubuntu-latest (3.8)	2m 21s
test-widget (PyQt5)	1m 38s
test macos-latest (3.8)	3m 55s
test-widget (PySide2)	56s
test windows-latest (3.8)	2m 31s
benchmarks	5m 23s
test-widget (PySide6)	59s
test ubuntu-latest (3.9)	2m 16s
test-widget (PyQt6)	59s
test macos-latest (3.9)	1m 12s
test windows-latest (3.9)	2m 39s
Build	58s
test ubuntu-latest (3.10)	2m 12s
test macos-latest (3.10)	1m 8s
Pydantic compat (3.11, v1)	1m 47s
test windows-latest (3.10)	2m 41s
Pydantic compat (3.11, v2)	1m 37s
test ubuntu-latest (3.11)	2m 11s
Typesafety	24s
Pydantic compat (3.11, both)	2m 51s
test macos-latest (3.11)	1m 4s
test windows-latest (3.11)	2m 41s
test ubuntu-latest (3.12)	2m 37s
test macos-latest (3.12)	1m 19s
test windows-latest (3.12)	2m 38s
Test min reqs (3.10) / ubuntu-latest py3.10	1m 54s
Test min reqs (3.12) / ubuntu-latest py3.12	36s
Test min reqs (3.8) / ubuntu-latest py3.8	2m 0s
Deploy	0s
	55m 36s

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