hook_civicrm_geocoderFormat does not alter address components

Steps to repro:

1. Create an extension named geocoderformat containing this hook implementation:

function geocoderformat_civicrm_geocoderFormat($geoProvider, &$values, $xml) {
  $values['county_id'] = 2;
}

2. Install clean civicrm 5.49.5, enable this extension, and configure geocoding (eg set "Administer => Mapping => Geocoding Provider" to "Google").
3. For any contact, save a new address in California, being sure to leave the county field empty, and observe that the county is forced to "Contra Costa".
4. Install clean civicrm 5.51.1 (I think 5.51.0 will also demonstrate the problem), enable this extension, and configure geocoding.
5. For any contact, save a new address in California, being sure to leave the county field empty, and observe that the county is not altered.

Best guess as to the cause:

Changes in cb695d3e (pinging @colemanw) caused CRM_Utils_Hook::geocoderFormat('Google', $values, $xml) to be called in a context in which $values is never used.

Suggested solution:

The CRM_Utils_Geocode_Google::makeRequest() method should receive $values as a parameter-by-reference.

I'm planning to submit a simple PR along those lines.