Support refresh when the session is about to expire.

[jpoehnelt]

The API session token expires if someone leaves a map open for more than about 24 hours, so it's normal to see a low level of these errors. (This is the intended behavior)

Could automatically reset and load as necessary to better support certain app patterns.

[jpoehnelt]

Example use case for Vue: https://github.com/googlemaps/js-api-loader/issues/357#issuecomment-908521283 StackOverflow: https://stackoverflow.com/questions/54205790/notloadingapifromgooglemapserror-even-when-loading-correct-url

[spaghettiguru]

We are having issues with this too...