refactor: use ternary operator instead of if-else

Author: su-muzhi

src/BaseSelect/index.tsx

@@ -605,15 +605,9 @@ const BaseSelect = React.forwardRef<BaseSelectRef, BaseSelectProps>((props, ref)
         onSearch(mergedSearchValue, { source: 'submit' });
       } else if (mode === 'multiple') {
         // `multiple` mode only clean the search value but not trigger event
-        if (mergedShowSearch) {
-          onSearch('', {
-            source: 'effect',
-          });
-        } else {
-          onSearch('', {
-            source: 'blur',
-          });
-        }
+        onSearch('', {
+          source: mergedShowSearch ? 'effect' : 'blur',
+        });
       }
     }