chore: Cleanup silly fragment usage

[rschristian]

This was super duper dumb of me, obviously attaching a ref to the Fragment wasn't going to work but "solved" the issue as it was mostly a no-op.

Ryun shouldn't code when tired.

[github-actions]

Size Change: -109 B (-2.65%)

Total Size: 4 kB

Filename	Size	Change
dist/preact-custom-element.esm.js	1.32 kB	-35 B (-2.58%)
dist/preact-custom-element.js	1.3 kB	-38 B (-2.83%)
dist/preact-custom-element.umd.js	1.37 kB	-36 B (-2.56%)

_{compressed-size-action}