[jsinterp] Support YT player 590f65a6 #2958

Job	Run time
Select tests from inputs	1s
Linter	3m 1s
Run tests (ubuntu-20.04, 2.7, cpython, core, sh)	1m 2s
Run tests (ubuntu-20.04, 3.2, cpython, core, sh)	3m 3s
Run tests (ubuntu-20.04, 3.5, cpython, core, sh)	1m 9s
Run tests (ubuntu-20.04, 3.9, cpython, core, sh)	1m 0s
Run tests (ubuntu-20.04, 3.11, cpython, core, sh)	59s
Run tests (ubuntu-20.04, pypy-2.7, cpython, core, sh)	2m 13s
Run tests (ubuntu-20.04, pypy-3.6, cpython, core, sh)	2m 38s
Run tests (ubuntu-20.04, pypy-3.7, cpython, core, sh)	2m 35s
Run tests (windows-2019, 3.4, cpython, core, bat)	2m 13s
Run tests (windows-2019, 3.4, cpython, nodownload, bat)	1m 17s
Run tests (ubuntu-20.04, 2.7, jython, core, sh)	3m 23s
Run tests (ubuntu-20.04, 2.7, jython, nodownload, sh)	50s
	25m 24s

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