1214 playback at t 0

[YiranDuan721]

Motivation and Context

fixed #1214

Description

Distinguish the behavior of the watchProgress function when the parameter t is set to 0 and when it is not set, so that it matches the description in the comment:

If query parameter 't' is specified, the timestamp given by 't' will be used.

Steps for Testing

1. Clear website cache
2. Log in
3. Navigate to a recording video
4. Jump to anywhere in the video other than the start
5. Refresh the page, note that the watch progress has been recorded and can be restored, so that the video resumes at the last progress
6. Add parameter "t=0" to current url and visit it
7. See the video plays from the start

[github-actions]

Your Testserver will be ready at https://1224.test.live.mm.rbg.tum.de in a few minutes.

Logins

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[alexanderstephan]

The fix itself looks good! However, I would not like to check in the go.work.sum file here. I did not inspect the go.work.sum file in detail, but it seems odd to me that so many lines are added, although there should be no dependency updates.

[YiranDuan721]

Thanks for the review! I can't find a way to revert the change to "go.work.sum" file elegantly -- I'll just create a new branch and do the things again. Sorry for the bother, I'll be more careful with git next time.
:pingubonk: