Application Services hosted libraries do not get the correct search path generated in the searchfox query for mobile applications

[travis79]

Application Services library metrics links are broken because the metrics that are instrumented there aren't always called directly in the consuming application, so when I click on something like nimbus_events.exposure for either Firefox Android or iOS, I get the following links generated for the searchfox url:

nimbus_events.exposure on Firefox Android
https://searchfox.org/mozilla-mobile/search?q=nimbus_events.exposure|nimbusEvents.exposure|NimbusEvents.exposure|nimbus_events.exposure|nimbus_events::exposure&path=fenix&regexp=true

nimbus_events.exposure on Firefox iOS
https://searchfox.org/mozilla-mobile/search?q=nimbus_events.exposure|nimbusEvents.exposure|NimbusEvents.exposure|nimbus_events.exposure|nimbus_events::exposure&path=firefox-ios&regexp=true

Both of these should use the path application-services instead of the application search path, or both, in the case a metric might be instrumented in both the A-S library and the app.

Here's an example of a working searchfox query for the nimbus_events.exposure:

(with a path specified)
https://searchfox.org/mozilla-mobile/search?q=nimbus_events.exposure%7CnimbusEvents.exposure%7CNimbusEvents.exposure%7Cnimbus_events.exposure%7Cnimbus_events%3A%3Aexposure&path=application-services&case=false&regexp=true

(no path specified, still finds the metrics but could be less precise in certain cases)
https://searchfox.org/mozilla-mobile/search?q=nimbus_events.exposure|nimbusEvents.exposure|NimbusEvents.exposure|nimbus_events.exposure|nimbus_events%3A%3Aexposure&path=&case=false&regexp=true