fix: handle `ServiceConflictError` when reusing `Actor` across sequential context #237

Job	Run time
PR title check	6s
Code checks / Actions lint check	27s
Code checks / Spell check	8s
Doc checks / Doc checks / Docs check	1m 21s
Code checks / Lint check / Lint check (3.13)	11s
Code checks / Lint check / Lint check (3.10)	10s
Code checks / Lint check / Lint check (3.11)	14s
Code checks / Lint check / Lint check (3.14)	17s
Code checks / Type check / Type check (3.10)	14s
Code checks / Type check / Type check (3.13)	10s
Code checks / Lint check / Lint check (3.12)	14s
Code checks / Type check / Type check (3.14)	12s
Code checks / Type check / Type check (3.11)	10s
Code checks / Type check / Type check (3.12)	11s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	55s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	2m 7s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.10)	57s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	2m 5s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 25s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	1m 0s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	1m 1s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 28s
Tests / Unit tests / Unit tests (windows-latest, 3.10)	1m 29s
Tests / Integration tests (${{ matrix.python-version }}, ${{ matrix.os }})	0s
Tests / E2E tests (${{ matrix.python-version }}, ${{ matrix.os }})	0s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	57s
	17m 29s

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