WebApp.addHtmlAttributeHook hooks are not cleared on HMR updates

[marsimeau]

When calling a WebApp.addHtmlAttributeHook, previous hooks are not cleared upon HMR updates.

It's worth noting that this doesn't seem to any negative impact on my app.

Test done locally:

// ...

const randomNumber = Math.random()

WebApp.addHtmlAttributeHook(req => {
  console.log(randomNumber)

  return null
})

Here is what the console returns after 2 updates on each request:

0.6168036561182655
0.06950770055811595
0.5245338011658636