Handle multiple files properly in zwave_js update entity

[raman325]

Proposed change

Onto PR 7 related to the update entity, continuing to fix bugs 🙂 hopefully 7th times a charm.

Discovered that the asyncio.Event logic does not handle multiple files because we don't reset the event after waiting for it the first time. Resetting the flag should cause the service to block until the second file is done.

For some reason the new test hangs though and I can't figure out where it is blocking. Would appreciate some guidance

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[probot-home-assistant]

Hey there @home-assistant/z-wave, mind taking a look at this pull request as it has been labeled with an integration (zwave_js) you are listed as a code owner for? Thanks!
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[MartinHjelmare]

Thanks!