Need rename placeholder for question selector in logic

[dk981234]

Rename "Choose..." to "Select question..."

[dk981234]

[andrewtelnov]

@dk981234 @novikov82 @RomanTsukanov Technically, it is not questions only. We can show matrix colums and calculated values. We have "Selected elements..." that we do not use right now. I can use it. However, I beleive "Choose..." is good enough. Since it is the only dropdown to select from the beginning, a user will open a dropdown in anyway.

Thank you, Andrew

[RomanTsukanov]

Then let's change it to "Select..." as per advice by Microsoft.

[OlgaLarina]

https://github.com/surveyjs/survey-creator/commit/09093c2060ef0cefb1ce93b9ad46db9a3e7e0197#diff-443d025b0cc0e996a7703312805e840d06f2212104ff74eb1c418d9926ea56ff