fix: validate_scope should allow all scopes when no restriction #1350

Job	Run time
checks / readme-snippets	16s
checks / pre-commit	21s
checks / test (3.10, locked, ubuntu-latest)	42s
checks / test (3.10, locked, windows-latest)	2m 8s
checks / test (3.11, lowest-direct, ubuntu-latest)	46s
checks / test (3.10, lowest-direct, windows-latest)	2m 29s
checks / test (3.11, locked, ubuntu-latest)	44s
checks / test (3.12, lowest-direct, ubuntu-latest)	48s
checks / test (3.11, lowest-direct, windows-latest)	2m 37s
checks / test (3.12, lowest-direct, windows-latest)	3m 43s
checks / test (3.12, locked, windows-latest)	3m 18s
checks / test (3.11, locked, windows-latest)	2m 22s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 13s
checks / test (3.10, lowest-direct, ubuntu-latest)	42s
checks / test (3.12, locked, ubuntu-latest)	47s
checks / test (3.13, locked, ubuntu-latest)	40s
checks / test (3.14, locked, windows-latest)	3m 8s
checks / test (3.13, lowest-direct, windows-latest)	2m 31s
checks / test (3.13, locked, windows-latest)	2m 13s
checks / test (3.14, locked, ubuntu-latest)	2m 20s
checks / test (3.13, lowest-direct, ubuntu-latest)	45s
checks / test (3.14, lowest-direct, windows-latest)	2m 53s
all-green	4s
	37m 30s

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