fix: Use same `client_key` for `Actor` created `request_queue` and improve its metadata estimation #623

Job	Run time
Type check / Type check (3.13)	26s
Type check / Type check (3.10)	21s
Type check / Type check (3.12)	26s
Type check / Type check (3.11)	22s
Docs check / Docs check	1m 2s
Unit tests / Unit tests (ubuntu-latest, 3.10)	28s
Lint check / Lint check (3.11)	12s
Lint check / Lint check (3.12)	12s
Unit tests / Unit tests (ubuntu-latest, 3.11)	23s
Unit tests / Unit tests (windows-latest, 3.10)	42s
Lint check / Lint check (3.13)	9s
Lint check / Lint check (3.10)	12s
Unit tests / Unit tests (windows-latest, 3.12)	44s
Unit tests / Unit tests (ubuntu-latest, 3.13)	26s
Unit tests / Unit tests (windows-latest, 3.11)	42s
Unit tests / Unit tests (windows-latest, 3.13)	45s
Unit tests / Unit tests (ubuntu-latest, 3.12)	26s
Integration tests / Integration tests (3.13)	3m 41s
Integration tests / Integration tests (3.10)	3m 41s
Integration tests / Approve integration tests for PRs from forks	3m 41s
	19m 1s

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