fix: Use same `client_key` for `Actor` created `request_queue` and improve its metadata estimation #624

Job	Run time
Lint check / Lint check (3.12)	12s
Lint check / Lint check (3.11)	9s
Lint check / Lint check (3.13)	16s
Type check / Type check (3.11)	27s
Type check / Type check (3.12)	30s
Docs check / Docs check	1m 2s
Type check / Type check (3.10)	26s
Lint check / Lint check (3.10)	9s
Type check / Type check (3.13)	24s
Unit tests / Unit tests (ubuntu-latest, 3.13)	24s
Unit tests / Unit tests (ubuntu-latest, 3.10)	25s
Unit tests / Unit tests (ubuntu-latest, 3.12)	28s
Unit tests / Unit tests (windows-latest, 3.11)	47s
Unit tests / Unit tests (windows-latest, 3.10)	42s
Unit tests / Unit tests (ubuntu-latest, 3.11)	24s
Unit tests / Unit tests (windows-latest, 3.13)	52s
Integration tests / Integration tests (3.10)	34s
Unit tests / Unit tests (windows-latest, 3.12)	46s
Integration tests / Integration tests (3.13)	34s
Integration tests / Approve integration tests for PRs from forks	34s
	10m 5s

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