Add construct_generic_block_test to build file (#13195)

* Add construct_generic_block_test test to build file

* Use the right require library

---------

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>

beacon-chain/rpc/prysm/v1alpha1/validator/BUILD.bazel

@@ -182,6 +182,7 @@ go_test(
  "assignments_test.go",
  "attester_test.go",
  "blocks_test.go",
+ "construct_generic_block_test.go",
  "exit_test.go",
  "proposer_altair_test.go",
  "proposer_attestations_test.go",

beacon-chain/rpc/prysm/v1alpha1/validator/construct_generic_block_test.go

@@ -5,8 +5,8 @@ import (
 
  "github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
  ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+ "github.com/prysmaticlabs/prysm/v4/testing/require"
  "github.com/prysmaticlabs/prysm/v4/testing/util"
- "github.com/stretchr/testify/require"
 )
 
 func TestConstructGenericBeaconBlock(t *testing.T) {
@@ -15,7 +15,7 @@ func TestConstructGenericBeaconBlock(t *testing.T) {
  // Test when sBlk or sBlk.Block() is nil
  t.Run("NilBlock", func(t *testing.T) {
  _, err := vs.constructGenericBeaconBlock(nil, nil, nil)
- require.ErrorContains(t, err, "block cannot be nil")
+ require.ErrorContains(t, "block cannot be nil", err)
  })
 
  // Test for Deneb version