Add integration test for wallet disconnect clearing all cached query data

[Chucks1093]

Summary

When a user disconnects their wallet, stale query data from their session (holdings, trade history, portfolio) should be cleared from the React Query cache so the next user connecting on the same device does not see leftover data.

Scope

• Seed the React Query cache with holdings and trade history data for a connected wallet
• Simulate a wallet disconnect
• Assert the holdings query cache is cleared
• Assert the trade history query cache is cleared
• Assert the creator list query cache is NOT cleared (it is public data)

Acceptance Criteria

• Holdings cache cleared on wallet disconnect
• Trade history cache cleared on wallet disconnect
• Creator list cache preserved on wallet disconnect
• No stale wallet-scoped data remains in cache after disconnect

ETA: 12 hours

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Coordinate on Telegram

[lekanay2005-coder]

@lekanay2005-coder has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

pls i will like to work in this issue pls

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[wandooadzer-cmyk]

@wandooadzer-cmyk has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Can I work on this task?

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