When changing the 'volume' attribute of media element, should also call
`set_volume()` api of underlying player if it is valid value.
Testing: No Test is required, as this should not affect any WPT Test
Fixes: N/A
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Signed-off-by: rayguo17 <rayguo17@gmail.com>
Signed-off-by: TIN TUN AUNG <62133983+rayguo17@users.noreply.github.com>
Co-authored-by: Euclid Ye <yezhizhenjiakang@gmail.com>