Like a5f3318f3b, this proves that the new dispatcher conversion works for fire-and-forget style dispatches too. This is another obvious-if-broken and generally safe conversion to make.
Other actions which can be dispatched this way have been excluded for reasons mentioned in the Action enum's comments.
Webpack was printing several warnings about missing default exports,
particularly from components, where we auto-generate a default import via the
component index.
As part of this, the emoji picker recent handling (which is not a component) is
moved elsewhere to avoid the generated import.
We use a trick with refs to automatically focus the element, also making use of mx_HiddenFocusable to hide the unnecessary outline.
The menu itself has been restructured to hide some elements from screen readers (reduce noise) and to have a single unordered list. Screen readers mention when the user "enters" a list, and each item was previously saying "enter list <action>" when it should have just been "<action>".
By focusing automatically, the keyboard can be used to go up/down the menu as may be expected by keyboard users.
Tjis is quite confusing as the welcome page is designed for when
you're not logged in, ie. has a sign-in button. There's also no way
to get back into the app so it really looks like it's logged you
out.
Reverts 116367fd69
