FE: Allowed to query if no profile type is selected

[lilic]

If I go to parca and select the label name that is suggested for me e.g. app, while leaving profile type as blank and I hit search, I get an empty screen. I was expecting a warning that I didn't select any profiles (as that was the case) or an error of some sort.

This is the URL that is generated: https://demo.parca.dev/?expression_a=%7B%7D&from_a=1656084616216&to_a=1656085516216&merge_a=false&time_selection_a=relative:minute|15&currentProfileView=icicle