Replaced “vector-menu-heading” with ‘’(empty string) in “$portletData['heading-class'] = '';”
in includes/SkinVector.php and updated accordingly the includes/templates/Menu.mustache file.
Updated “vector-menu-heading” with ‘’(empty string) in stories/LanguageButton.stories.data.js,
stories/UserLinks.stories.data.js, and tests/phpunit/integration/SkinVectorTest.php respectively
SkinVector and Storybook are cleaned up.
Bug: T290281
Change-Id: I4ca16953799b3dc52e45674bb398c78f14cfc842