[BUG] All captions are highlighted as selected

[Dananji]

Description

In the captions menu in Ramp, all captions are shown as selected even though only one caption is selected.

Environment

• All desktop browsers (Safari, Firefox, Chrome)
• Chrome and Safari in iPad
• Chrome in Android

Done Looks Like

• Only the selected caption is shown as selected on player initialization

Notes

Ramp only sets default attribute to true for the first caption in the list, but Video.js makes 2 passes over the text tracks list and marks multiple captions as selected in the captions menu when initializing.

[elynema]

Test on demo site before we make a new Ramp PR.

[charumitraravi]

Verified this item on the Ramp demo site on Chrome and Safari browsers, on web and mobile. The fix is working as expected.