Fix:Empty link in record details isn't deleted by default (#9840)

Gives a fix for #9780 . I have added handleDelete inside the submit
function and created a state to manage the empty placeholder
[Screencast from 2025-01-24
01-45-22.webm](https://github.com/user-attachments/assets/87b209a0-7f60-4d72-ad06-c8b955cf6cd2)

---------

Co-authored-by: etiennejouan <jouan.etienne@gmail.com>
Co-authored-by: Etienne <45695613+etiennejouan@users.noreply.github.com>

packages/twenty-front/src/modules/object-record/record-field/meta-types/input/components/MultiItemFieldInput.tsx

@@ -128,6 +128,15 @@ export const MultiItemFieldInput = <T,>({
       }
     }
 
+    if (inputValue === '' && isAddingNewItem) {
+      return;
+    }
+
+    if (inputValue === '' && !isAddingNewItem) {
+      handleDeleteItem(itemToEditIndex);
+      return;
+    }
+
     const newItem = formatInput
       ? formatInput(inputValue)
       : (inputValue as unknown as T);