[netatmo] Camera event not systematically updated

[lolodomo]

While testing #12698 I encountered the case where the last event was not updated.
First the channels were updates while the video was recording. At next poll, the event was unchanged in UI (video recording) while the API returned the event with video status being now available. Even after another poll, the channels were not updated.
I was even able to reproduce it.
@clinique: any idea ?

[lolodomo]

@clinique : thiis might be the code you added to filter already handled events?
I have not checked if the two events have the same timestamp but it is probable.

[lolodomo]

Looking at the logs, I can see that the last event was updated (video status) but keeping the same timestamp:

2022-05-07 20:25:23.018 [TRACE] [mo.internal.handler.ApiBridgeHandler] - executeUri returned : code [200 OK] body {"body":{"home":{"id":"xxxxx","events":[{"id":"yyyyy","type":"human","time":1651947874,"module_id":"zzzzz","snapshot":{"url":"https:\/\/netatmocameraimage.blob.core.windows.net\/production\/aaaaa"},"vignette":{"url":"https:\/\/netatmocameraimage.blob.core.windows.net\/production\/bbbbb"},"video_id":"ccccc","video_status":"recording","message":"<b>Mouvement<\/b> d\u00e9tect\u00e9"}]}},"status":"ok","time_exec":0.04108715057373047,"time_server":1651947922}

2022-05-07 20:27:54.622 [TRACE] [mo.internal.handler.ApiBridgeHandler] - executeUri returned : code [200 OK] body {"body":{"home":{"id":"xxxxx","events":[{"id":"yyyyy","type":"human","time":1651947874,"module_id":"zzzzz","snapshot":{"url":"https:\/\/netatmocameraimage.blob.core.windows.net\/production\/aaaaa"},"vignette":{"url":"https:\/\/netatmocameraimage.blob.core.windows.net\/production\/bbbbb"},"video_id":"ccccc","video_status":"available","message":"<b>Mouvement<\/b> d\u00e9tect\u00e9"}]}},"status":"ok","time_exec":0.021176815032958984,"time_server":1651948074}

I think the bug is at this line (updated events are ignored):
https://github.com/openhab/openhab-addons/blob/main/bundles/org.openhab.binding.netatmo/src/main/java/org/openhab/binding/netatmo/internal/handler/channelhelper/EventChannelHelper.java#L69
@clinique : I suggest to remove the stuff with lastEventTime, are you ok ?