Avoid using in_array function to compare an array of objects

Problem/Motivation

Avoid the potential for fatal error: "nesting level too deep".

in the TaxonomyReplaceService, the function getTermReferenceField() uses the in_array function to check of a Term object exists in an array of Term objects. This can potentially lead to a fatal error. A similar case is described in https://coderwall.com/p/5efmag/if-you-get-a-nesting-level-too-deep-error...

The link above recommends using strict mode for the in_array function, but strict mode just checks the object types. In this case the code in question is used to check if a Term is in an array of Terms. It should suffice to check if the term IDs are the same. The description of the function actually says this:

"Get the name of the term reference field relevant to this term ID"

My recommendation here is to modify the code in TaxonomyReplaceService beginning on line 146, replacing:

if (in_array($term, $referenced_terms)) {
  return $field_name;
}

with

foreach ($referenced_terms as $referenced_term) {
  if ($referenced_term->id() === $term->id()) {
    return $field_name;
  }
}