fix: prevent duplicate dropdowns in activity targets when editing in different contexts (#12462)

Closes #12361

### Changes Made

- In `ActivityTargetsInlineCell`, we now use different component
instance IDs based on context. This ensures that each instance of the
component (whether in right drawer or main view) has its own isolated
state, preventing state conflicts and duplicate dropdowns.
- The `MultipleRecordPicker` component now properly resets its state
when closed, preventing state leakage between instances.


https://github.com/user-attachments/assets/deb99687-a803-417e-a339-cab061026739

packages/twenty-front/src/modules/ui/layout/right-drawer/contexts/RightDrawerContext.tsx

@@ -0,0 +1,8 @@
+import { createRequiredContext } from '~/utils/createRequiredContext';
+
+type RightDrawerContextType = {
+  isInRightDrawer: boolean;
+};
+
+export const [RightDrawerProvider, useIsInRightDrawerOrThrow] =
+  createRequiredContext<RightDrawerContextType>('RightDrawer');