No suggestions for clause or operator values before typing " #4
Description
For example pressing Ctrl+Space with the cursor placed behind "if": we do not get any suggestions. We need to type " first to make it work. Previously it was possible to use boolean true/false here (without "). Maybe that's why. But this is no longer allowed anyway. Same thing for operator values where we used to allow numbers like 100 instead of strings like "100". So we probably do not get suggestions when the cursor is placed behind "limit_to": for the same reasons.