fix(list): primary action is fired twice on space/enter keydown
fix(list): primary action is fired twice on space/enter keydown

- disable keydown handler added by ng-aria
- fix doc and comment typos
- fix md-menu example not rendering
- rename `copyAttributes` to `moveAttributes` as the attribute are removed from the source
- improve JSDoc

Fixes #11756

angular/material,marekmicek/material,marekmicek/material,oostmeijer/material,bluebirdtech/material,angular/material,bluebirdtech/material,clshortfuse/material,oostmeijer/material,angular/material,clshortfuse/material,bluebirdtech/material,angular/material,clshortfuse/material,bluebirdtech/material,oostmeijer/material,clshortfuse/material,oostmeijer/material,marekmicek/material,marekmicek/material