[howler] off() event fix allowing to unsubscribe all registered callbacks (#45401)
[howler] off() event fix allowing to unsubscribe all registered callbacks (#45401)

* [howler] Fixed off event typings

Allow unsubscribing by name again, without having to pass a callback method.

* Update index.d.ts
dsebastien/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped