fix: handle null number for non-nn column

Signed-off-by: Wing-Kam Wong <wingkwong.code@gmail.com>

packages/nc-gui/components/project/spreadsheet/components/moreActions.vue

@@ -289,6 +289,8 @@ export default {
                 } else if (input == 'true' || input == 'yes' || input == 'y') {
                   input = '1'
                 }
+              } else if (v.uidt === UITypes.Number) {
+                if (input == "") input = null
               }
               res[col.destCn] = input
             }