fix: Use same `client_key` for `Actor` created `request_queue` and improve its metadata estimation #614

Job	Run time
Lint check / Lint check (3.13)	10s
Lint check / Lint check (3.11)	13s
Lint check / Lint check (3.12)	9s
Lint check / Lint check (3.10)	9s
Type check / Type check (3.11)	21s
Docs check / Docs check	58s
Unit tests / Unit tests (ubuntu-latest, 3.11)	21s
Type check / Type check (3.10)	24s
Type check / Type check (3.13)	31s
Type check / Type check (3.12)	29s
Unit tests / Unit tests (ubuntu-latest, 3.13)	27s
Integration tests / Integration tests (3.10)	9m 52s
Unit tests / Unit tests (ubuntu-latest, 3.12)	25s
Unit tests / Unit tests (ubuntu-latest, 3.10)	25s
Unit tests / Unit tests (windows-latest, 3.13)	53s
Unit tests / Unit tests (windows-latest, 3.12)	48s
Unit tests / Unit tests (windows-latest, 3.10)	43s
Unit tests / Unit tests (windows-latest, 3.11)	45s
Integration tests / Integration tests (3.13)	10m 44s
Integration tests / Approve integration tests for PRs from forks	50s
Integration tests / Integration tests for PRs from forks	0s
	29m 37s

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