fix: regression for getting a player via the tech's id

[gkatsev]

As part of #4836, this piece of code was removed because it was thought it was not needed as everything else covers it. Turns out it's needed.

video.js/src/js/video.js

Lines 103 to 107 in f6eaa5e

	// Element may have a player attr referring to an already created player instance.
	// If so return that otherwise set up a new player below
	if (tag.player || Player.players[tag.playerId]) {
	return tag.player || Player.players[tag.playerId];
	}

[misteroneill]

Looks good.