Fix error: stakingEvents parsing when not array

Sometimes the stakingEvents was null and we were still trying to access it as an array. This is fixing this issue, which was causing the staking button to be gone as well as the staking modal to be completely white.

Author: mraveux

src/stores/Staking.ts

@@ -202,7 +202,9 @@ export const useStakingStore = createStore({
             const { activeAddress } = useAddressStore();
             if (!activeAddress.value) return null;
 
-            return state.stakingEventsByAddress[activeAddress.value] || null;
+            const events = state.stakingEventsByAddress[activeAddress.value] || null;
+            if (!events || !Array.isArray(events)) return null;
+            return events;
         },
         restakingRewards: (state, { stakingEvents, activeValidator }): Readonly<number | null> => {
             // Only show rewards for restaking validators
@@ -212,7 +214,7 @@ export const useStakingStore = createStore({
             ) return null;
 
             const events = stakingEvents.value as StakingEvent[] | null;
-            if (!events) return null;
+            if (!events || !Array.isArray(events)) return null;
 
             const addStakeEvents: AddStakeEvent[] = events.filter((event) => {
                 if (event.type !== 6) return false;