refactor: use sdk for accelerate, consolidate, and consolidateUnspents

[danielpeng1]

Second pass of de- mocking tests to use real sdk functions.

• Updated accelerate.test.ts, consolidate.test.ts,consolidateUnspents.test.ts

Small notes:

• For accelerate.test.ts and consolidateUnspents.test.ts's last test case (basically don’t send walletPubs to AWM if a keychain is missing a pub), the real SDK asserts k.pub on every keychain before it ever calls customSigningFunction, so we can’t get there without stubbing accelerateTransaction / consolidateUnspents to call params.customSigningFunction directly.
• For the consolidate.test.ts MPC case, I'm still stubbing signAndSendTxRequests as TSS signing is covered in signAndSendTxRequest.test.ts. When refactor: signAndSend sdk functions and ECDSA MPCv2 utils #216 is merged I can drop this stub and use buildEcdsaMpcv2TxRequest and nockEcdsaMpcv2SigningFlow from the new testUtils.ts.

Ticket: WAL-1489

[linear-code]

WAL-1489

[pranishnepal]

lgtm - thanks for creating the util functions!