(preact-iso): register link click handler immediately to prevent race condition

[developit]

This was using useEffect() to register the handler, but that waits 1 rAF. During the frame delay, clicks are ignored by the router.

[changeset-bot]

🦋 Changeset detected

Latest commit: 79c7fd6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
preact-iso	Patch

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[github-actions]

Size Change: -9 B (0%)

Total Size: 5.92 kB

Filename	Size	Change
packages/preact-iso/.dist/index.********.js	1.56 kB	-4 B (0%)
packages/preact-iso/.dist/prerender.********.js	338 B	-3 B (-1%)
packages/preact-iso/router.js	2.32 kB	-2 B (0%)

ℹ️ View Unchanged

Filename	Size	Change
packages/preact-iso/hydrate.js	290 B	0 B
packages/preact-iso/index.js	191 B	0 B
packages/preact-iso/lazy.js	594 B	0 B
packages/preact-iso/prerender.js	629 B	0 B

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