fix(core): push emit handlers into listeners set

packages/core/src/store/hooks.ts

@@ -69,7 +69,8 @@ export function useHooks(emit: (...args: any[]) => void, hooks: Ref<FlowHooks>)
         emit(key, data)
       }
 
-      value.on(listener)
+      // push into fns instead of using `on` to avoid overwriting default handlers - the emits should be called in addition to the default handlers
+      value.fns.add(listener)
 
       tryOnScopeDispose(() => {
         value.off(listener)

packages/core/src/utils/createExtendedEventHook.ts

@@ -8,6 +8,7 @@ import { tryOnScopeDispose } from '@vueuse/core'
  */
 export interface EventHookExtended<T> extends EventHook<T> {
   hasListeners: () => boolean
+  fns: Set<(param: T) => void>
 }
 
 export function createExtendedEventHook<T = any>(defaultHandler?: (param: T) => void): EventHookExtended<T> {
@@ -50,5 +51,6 @@ export function createExtendedEventHook<T = any>(defaultHandler?: (param: T) =>
     off,
     trigger,
     hasListeners,
+    fns,
   }
 }