don't submit form when submitevent get defaultPrevented

[SarguelUnda]

Fix #400

Objective

The pull request aim to not run action when someone call preventDefault on the submitevent.

Remarks

1. I didn't run prettier and there is a ts error when I build the project that was already there.
2. I'm not sure where to abort the handleFormSubmit function I choose to abort as soon as possible but maybe there are better place performance wise

[changeset-bot]

🦋 Changeset detected

Latest commit: 8a547a8

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

This PR includes changesets to release 1 package

Name	Type
@solidjs/router	Patch

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[ryansolid]

Thanks