fix: undefined useAccountsFetch queryFn return

[0xApotheosis]

Description

Query functions need to return something. Fixes console spew when a Ledger is connected:

Issue (if applicable)

QOL

Risk

Minimal

What protocols, transaction types, wallets or contract interactions might be affected by this PR?

N/A

Testing

The above console spew when connected to a Ledger should now longer show.

Engineering

☝️

Operations

☝️

Screenshots (if applicable)

See above.

[NeOMakinG]

Looks good so far

There is another error with receiveAddress as a query key, I guess it's because of those early returns in useReceiveAddress

          // Already partially covered in isInitializing, but TypeScript lyfe mang.
          if (!buyAsset || !wallet || !buyAccountId || !buyAccountMetadata) {
            return undefined
          }

          const buyAssetChainId = buyAsset.chainId
          const buyAssetAccountChainId = buyAccountId
            ? fromAccountId(buyAccountId).chainId
            : undefined

          /**
           * do NOT remove
           * super dangerous - don't use the wrong bip44 params to generate receive addresses
           */
          if (buyAssetChainId !== buyAssetAccountChainId) {
            return undefined
          }

We might be able to fix them the same way!

[0xApotheosis]

Thanks @NeOMakinG! I'll merge this and then check out the receiveAddress one 🙏