The file already has the ChannelID field. Therefore, we avoid querying
the database again. This sometimes causes errors in customer environments
where there is noticeable replication lag, causing files not to be
indexed entirely.
https://mattermost.atlassian.net/browse/MM-62900
```release-note
NONE
```
Co-authored-by: Mattermost Build <build@mattermost.com>
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