add dispatcher option to EventSource #13390

Job	Run time
dependency-review	13s
Lint	35s
Fuzzing	3m 32s
Test TypeScript types	32s
Test with Node.js 20 compiled --without-intl	5m 20s
Test with Node.js 21 compiled --without-intl	5m 23s
test (18, macos-latest) / Test with Node.js 18 on macos-latest	8m 43s
test (18, ubuntu-latest) / Test with Node.js 18 on ubuntu-latest	3m 44s
test (18, windows-latest) / Test with Node.js 18 on windows-latest	5m 12s
test (20, macos-latest) / Test with Node.js 20 on macos-latest	6m 32s
test (20, ubuntu-latest) / Test with Node.js 20 on ubuntu-latest	3m 49s
test (20, windows-latest) / Test with Node.js 20 on windows-latest	5m 47s
test (21, macos-latest) / Test with Node.js 21 on macos-latest	7m 57s
test (21, ubuntu-latest) / Test with Node.js 21 on ubuntu-latest	3m 25s
test (21, windows-latest) / Test with Node.js 21 on windows-latest	5m 51s
automerge	0s
	1h 6m 35s

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