Fix error when Netflix is missing episode 'summary' field

[JacksonMcKay]

Resolves #202 and #207.

When a show is removed from Netflix it no longer returns the summary field and the extension throws an error like TypeError: Cannot read properties of undefined (reading 'season') on the following line:

https://github.com/trakt-tools/universal-trakt-scrobbler/blob/eb0cea31f9f510cee4e0f134380bdcee2820a375/src/services/netflix/NetflixApi.ts#L332

In my case, the show A.P. Bio was the cause of the issue as it has been removed from Netflix.

The historyItem looked like this in my case:

"historyItem": {
    "bookmark": 1288,
    "country": "AU",
    "date": 1651909709871,
    "dateStr": "5/7/22",
    "deviceType": 2402,
    "duration": 1260,
    "episodeTitle": "Selling Out",
    "estRating": "30",
    "index": 395,
    "movieID": 81468758,
    "seasonDescriptor": "A.P. Bio",
    "series": 80177453,
    "seriesTitle": "A.P. Bio",
    "title": "\"Selling Out\"",
    "topNodeId": "80177453",
    "videoTitle": "Selling Out",
    "releaseYear": 2018
}

The code change: When historyItem.season was undefined the whole expression became !undefined which is always true. Added an explicit === false comparison to resolve this.

With this change I was able to sync episodes of the offending show like nothing ever happened.

[JacksonMcKay]

Note this is a fairly naive solution, it's not explicitly checking if anything is missing but it works

[RebeliusGaming]

Note this is a fairly naive solution, it's not explicitly checking if anything is missing but it works

How can I apply this correction?

[downey-lv]

Probably resolves #235 too