Add Google Maps check under `Brave Settings`

[kjozwiak]

As per the discussion via https://bravesoftware.slack.com/archives/C2FQMN4AD/p1713989176475879, we need to ensure that Google Maps works out of the gate with the default shield settings to avoid issues like brave/brave-browser#37075.

It's a pretty important/popular websites. Releasing with a regression isn't ideal/doesn't help with user retention. Lets add a quick Google Maps check under the https://github.com/brave/qa-resources/blob/master/WikiTemplate/Desktop/wikitemplate.md#bravery-settings.