replace lambda with anonymous inner class for Callback

[tma-isbx]

Solves https://github.com/innoveit/react-native-ble-manager/issues/865 for us.

Replaces the only lambda (that was blocking our build) with an anonymous class for greater backward/forward compatibility.

[tma-isbx]

I guess this was also recently fixed via: https://github.com/innoveit/react-native-ble-manager/pull/884

[phamhien2102]

I guess this was also recently fixed via: #884

Yes, it was fixed