Specifying scope by accessing a resource collection by hard-coded index produces invalid template

[majastrz]

Bicep version
Latest in main.

Describe the bug
Specifying scope by accessing a resource collection by hard-coded index produces invalid template. The produced template has copyIndex() without a corresponding copy loop.

To Reproduce
Steps to reproduce the behavior (from existing test):

// extension of a single resource in a collection
resource extendSingleResourceInCollection 'Microsoft.Authorization/locks@2016-09-01' = {
  name: 'one-resource-collection-item-lock'
  properties: {
    level: 'ReadOnly'
  }
  scope: storageAccounts[index % 2]
}

Additional context
Add any other context about the problem here.