Issue #3102133 by AaronBauman, darksnow: Refresh identity whenever token is refreshed

...src/Plugin/SalesforceAuthProvider/SalesforceJWTPlugin.php

src/IdentityNotFoundException.php

src/Rest/RestClient.php

src/Rest/SalesforceIdentity.php

src/Rest/SalesforceIdentityInterface.php

src/SalesforceAuthProviderInterface.php

src/SalesforceAuthProviderPluginBase.php

src/Storage/SalesforceAuthTokenStorage.php

src/Storage/SalesforceAuthTokenStorageInterface.php