feat(windows): add topSeek event params as mentioned in docs

[Lyqqt]

Summary

The seek event on the Windows platform does not include the parameters mentioned in the doc when dispatched; these need to be added.

Doc:onSeek

Motivation

Improve the platform code.

Changes

When dispatching the topSeek event, write the params currentTime and seekTime.

CurrentTime is current playback progress of the media.

SeekTime indicates the progress of the media when the seek event is triggered, and its value is derived from the progress of PositionChanged.

Test plan

1. Case 1. Using the videoRef.current.seek(seconds); function.
2. Case 2. Dragging the native Windows control component.

Expect: onSeek work fine.

<Video
  ref={videoRef}
  controls={true}
  onSeek={(e: onSeekData) => console.log(`currentTime=${e.currentTime} and seekTime=${seekTime}`)}
/>

[Lyqqt]

If seekTime needs to be of integer type:

seekTimeInSeconds is actually equal to currentTimeInSeconds. But their sources of meaning are slightly different. I'm unsure whether m_mediaPlayerPosition is necessary.

Example: {"currentTime": 274, "seekTime": 274}

Otherwise, it will be like this:

Example: {"currentTime": 274, "seekTime": 274.4}