[PR] fix: lazy case else evaluation [datafusion]

[via GitHub]

chenkovsky opened a new pull request, #17311:
URL: https://github.com/apache/datafusion/pull/17311

   ## Which issue does this PR close?
   
   
   - Closes #.
   
   ## Rationale for this change
   
   for sql 
   ```sql
   case 
   when cond1 then val1
   else val2
   end
   ```
   
   for when then expression, 
   
   there's short circuit. 
   ```rust
   if when_value.true_count() == 0 {
       continue;
   }
   ```
   
   but there's no such circuit for else expression.
   
   ## What changes are included in this PR?
   
   add short-circuit for else expression
   
   ## Are these changes tested?
   
   UT
   
   ## Are there any user-facing changes?
   
   No


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