Remove cell hotkey scope (#11435)

Remove FieldContext hotkey scope as:
- each Field should set its own hotkey scope (ex:
emails-field-input-{recordId} or emails-field-input for now)
- while opening a fieldInput, we should synchronously set the
corresponding hotkey scope

To cut this refactoring in half, I'm allowing all input to use
TableHotkeyScope.CellEditMode

packages/twenty-front/src/modules/activities/timeline-activities/rows/main-object/components/EventFieldDiffValue.tsx

@@ -53,7 +53,6 @@ export const EventFieldDiffValue = ({
               },
               defaultValue: fieldMetadataItem.defaultValue,
             },
-            hotkeyScope: 'field-event-diff',
             isReadOnly: false,
           }}
         >