fix: out transition function when config is undefined

[brunocalou]

This PR closes #7904

As stated on the issue, when performing quick actions, the Svelte will throw an Exception and stop working (Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'tick'))

Investigating the problem, the config object on the create_out_transition function is undefined, so calling config.tick() will throw this exception. I added the ?. operator so it would call the tick function just if it is defined.

After that was solved, another issue emerged, but it was related to the detach function on dom.ts file. It was calling
removeChild from a parentNode, but parentNode was null (node.parentNode?.removeChild(node);). I added the ?. operator so it would remove the child just if the parent node exists.

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Tests

• Run the tests with npm test and lint the project with npm run lint

[brunocalou]

Hey guys, the CI is breaking on a Test step, but it runs perfectly on my machine.

There is no error, just a Error: Process completed with exit code 1. message at the end. Any idea how to solve it?

[exseniorastronaut]

@Conduitry can you have a look at this please?

[baseballyama]

Thank you for your contribution.

I think this fix doesn't solve the actual issue. Just hiding the issue.
And in my local environment, I'm getting a different error.
It means the fundamental issue is that the next event comes before the transition is complete.

I'm not sure how this can be resolved on the Svelte side.
Perhaps, in this case, we need to implement a way to disable the click events until the transition is complete in userland.

[baseballyama]

According to this comment, this referred issue was fixed, so I close this PR.
Thank you for your contribution.

#7904 (comment)