Core htmx Regression Tests

• selected element with ID does not cause NPE when it disappears12ms ‣

  this.server.respondWith('GET', '/test', "<div id='d1'>Replaced</div>")
  var input = make('<input hx-trigger="click" hx-get="/test" id="i1" hx-swap="outerHTML">')
  input.focus()
  input.click()
  this.server.respond()
  byId('d1').innerText.should.equal('Replaced')