fix: seeking when preload is none

[luwes]

related #910

this fixes an issue where when you seek before the video is loaded we don't set the video.currentTime.

it's fine to set the currentTime anytime. it doesn't throw for a valid number value.
but users have to set the defaultduration in some cases. not sure with iOS and native HLS.

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Name	Status	Preview	Comments	Updated (UTC)
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[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 76.92%. Comparing base (3ea80df) to head (9794ad1).
Report is 121 commits behind head on main.

Files with missing lines	Patch %	Lines
src/js/media-store/state-mediator.ts	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #997      +/-   ##
==========================================
- Coverage   78.55%   76.92%   -1.64%     
==========================================
  Files          59       50       -9     
  Lines       11080    12102    +1022     
  Branches        0      699     +699     
==========================================
+ Hits         8704     9309     +605     
- Misses       2376     2768     +392     
- Partials        0       25      +25     

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[cjpillsbury]

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