Improve combobox UX - Githubissues

Remaining (or future) improvements

[x] Prevent duplicates by filtering data more aggressively. This should likely be solved on the API side to only return one entry for each company.
[x] Limit the combobox list to only show the 5 most relevant items, to prevent scrolling and jumpy behavior.
[x] UX needs to be improved to prevent scrolling when the focus changes. Seems to be worse by having a long list of items, so this might resolve itself if we just limit the number of items displayed.
[x] Ensure long names wrap properly
[x] Ensure long names can be displayed as the selected value (or use ellipsis to shorten displayed characters)