Merge more sibling templates

[titoBouzout]

This

  <>
      <div />
      <button type="button">hi</button>
    </>

var _tmpl$ = /*#__PURE__*/_$template(`<div>`),
  _tmpl$2 = /*#__PURE__*/_$template(`<button type=button>hi`);

Could be

_$template(`<div></div><button type="button">hi</button>`)

Reported by @milomg in https://discord.com/channels/722131463138705510/817960620736380928/1425880989598482607

https://playground.solidjs.com/anonymous/6f9638af-453b-4841-b8cd-76ea1c4fc15a