Fix Redux Error #9: Nested dispatch in authSlice

[sentry]

This PR resolves Redux Error #9, which occurs when an action is dispatched while a reducer is already executing. The root cause was identified in src/store/slices/authSlice.ts where the setCredentials reducer synchronously called userLogin$.next({}).

This synchronous emission triggered a chain of events via the userLogin$ observable's subscription in src/init.ts, leading to oneSignalActionBasedOnStatus() and subsequently setShowOneSignalPrompt being dispatched while the setCredentials reducer was still active.

The fix involves wrapping userLogin$.next({}) in a setTimeout(() => ..., 0) call within the setCredentials reducer. This defers the observable emission to the next event loop tick, ensuring that the Redux reducer has completed its execution before any downstream dispatches are triggered, thus preventing the nested dispatch error.

Fixes SH-STUDENT-APP-E

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