chore: fix api handler used during testing

[nflaig]

Motivation

Fix e2e tests on electra branch, see job run

Description

Fix api handler used during testing by supplying api module to call to set as this object

lodestar/packages/beacon-node/src/api/impl/beacon/pool/index.ts

Lines 85 to 87 in 81b6d7a

	async submitPoolAttestations({signedAttestations}) {
	await this.submitPoolAttestationsV2({signedAttestations});
	},

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 49.39%. Comparing base (e35ff4a) to head (81b6d7a).
Report is 1 commits behind head on electra-fork-rebasejul30.

Additional details and impacted files

@@                    Coverage Diff                    @@
##           electra-fork-rebasejul30    #7047   +/-   ##
=========================================================
  Coverage                     49.39%   49.39%           
=========================================================
  Files                           589      589           
  Lines                         39217    39217           
  Branches                       2245     2249    +4     
=========================================================
  Hits                          19372    19372           
  Misses                        19804    19804           
  Partials                         41       41           

[wemeetagain]

🎉 This PR is included in v1.22.0 🎉