safe-global / safe-client-gateway / 9456194704

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Cache Safe existence check for counterfactual balances (#1626)

Introduces a new `isSafe` method on the `TransactionApi` that returns an _indefinitely_ cached `boolean` regarding deployment state. The cache is invalidated on the `SAFE_CREATED` event:

- Check `isSafe` within `BalancesApiManager` accordingly and propagate
- Add new `${chainId}_safe_exists_${address}` cache routing
- Add/update tests accordingly

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