chore: utilize `ensure_context` decorator for Actor #229

Job	Run time
Lint check / Lint check (3.9)	24s
Type check / Type check (3.9)	34s
Lint check / Lint check (3.10)	20s
Type check / Type check (3.10)	37s
Lint check / Lint check (3.11)	20s
Docs check / Docs check	1m 0s
Type check / Type check (3.11)	32s
Type check / Type check (3.12)	34s
Lint check / Lint check (3.12)	23s
Lint check / Lint check (3.13)	26s
Type check / Type check (3.13)	44s
Unit tests / Unit tests (ubuntu-latest, 3.9)	40s
Unit tests / Unit tests (ubuntu-latest, 3.10)	36s
Unit tests / Unit tests (ubuntu-latest, 3.11)	39s
Unit tests / Unit tests (ubuntu-latest, 3.12)	37s
Unit tests / Unit tests (ubuntu-latest, 3.13)	40s
Unit tests / Unit tests (windows-latest, 3.9)	2m 13s
Unit tests / Unit tests (windows-latest, 3.10)	1m 58s
Unit tests / Unit tests (windows-latest, 3.11)	2m 38s
Unit tests / Unit tests (windows-latest, 3.12)	2m 31s
Unit tests / Unit tests (windows-latest, 3.13)	2m 45s
Integration tests / Integration tests (3.9)	5m 53s
Integration tests / Integration tests (3.13)	6m 15s
Integration tests / Approve integration tests for PRs from forks	0s
Integration tests / Integration tests for PRs from forks	0s
	33m 19s

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