Move to search suggestions with keyboard keys

#### Is your suggestion related to a problem? Please describe.
I really like moving around Element only with the keyboard keys but with the search I can not

#### Describe the solution you'd like.
Move from search to search results with keyboard arrow keys similar to how the filter with CTRL K works

#### Describe alternatives you've considered.
It's not a big deal so it can just be left...

#### Additional context
Would be nice to have everything consistent and this does work for filtering chats...