feat: clear decentraland-connect storage on wallet disconnect

[LautaroPetaccio]

Summary

• Other Decentraland sites that use decentraland-connect clear the decentraland-connect-storage-key localStorage entry when a user disconnects their wallet. Without matching this behavior in core-web3, a disconnect here leaves stale connection metadata (provider type and chain ID) behind, which can cause those sites to still see the user as connected.
• This adds a clearConnectionStorage function (mirroring decentraland-connect's ConnectionManager.clearConnectionData) and calls it from the useWallet disconnect callback so both libraries stay in sync.
• The function is also exported for consumers that need to call it outside of useWallet.

How it works

1. A new clearConnectionStorage() in src/config/wagmi.ts removes the decentraland-connect-storage-key from localStorage, with SSR safety guards.
2. The disconnect callback in useWallet now calls clearConnectionStorage() right after wagmiDisconnect().

Test plan

• clearConnectionStorage unit tests: removes the expected key, no-ops when window is undefined
• useWallet disconnect test: verifies clearConnectionStorage is called on disconnect
• All existing tests continue to pass

[coveralls]

Pull Request Test Coverage Report for Build 23925396945

Details

• 5 of 6 (83.33%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.2%) to 92.768%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/config/wagmi.ts	3	4	75.0%

Totals
Change from base Build 23925046621:	-0.2%
Covered Lines:	467
Relevant Lines:	494

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💛 - Coveralls