test: fix flaky webhook dispatch pagination test #730

Job	Run time
PR title check	3s
Checks / Integration tests (3.11, ubuntu-latest)	2m 21s
Checks / Actions lint check	26s
Checks / Docstrings check	12s
Checks / Integration tests (3.14, ubuntu-latest)	2m 27s
Checks / Package check	15s
Checks / Spell check	7s
Checks / Type check / Type check (3.11)	12s
Checks / Type check / Type check (3.12)	12s
Checks / Lint check / Lint check (3.12)	13s
Checks / Lint check / Lint check (3.14)	12s
Checks / Lint check / Lint check (3.13)	11s
Checks / Doc check / Docs check	1m 20s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.11)	43s
Checks / Type check / Type check (3.13)	11s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.12)	48s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.14)	42s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.13)	48s
Checks / Unit tests / Unit tests (windows-latest, 3.13)	1m 5s
Checks / Unit tests / Unit tests (windows-latest, 3.11)	1m 11s
Checks / Lint check / Lint check (3.11)	10s
Checks / Unit tests / Unit tests (windows-latest, 3.12)	1m 8s
Checks / Unit tests / Unit tests (windows-latest, 3.14)	1m 30s
Checks / Type check / Type check (3.14)	15s
	16m 42s

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