fix(gui): cell copy-paste if condition correction

re #4758

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nc-gui/composables/useMultiSelect/index.ts

@@ -267,7 +267,8 @@ export function useMultiSelect(
               // copy - ctrl/cmd +c
               case 67:
                 // set clipboard context only if single cell selected
-                if (selectedRange.isSingleCell() && rowObj.row[columnObj.title!]) {
+                // or if selected range is empty
+                if ((selectedRange.isSingleCell() || selectedRange.isEmpty()) && rowObj.row[columnObj.title!]) {
                   clipboardContext = {
                     value: rowObj.row[columnObj.title!],
                     uidt: columnObj.uidt as UITypes,