Object::get_indexed was not correctly reporting invalid keys if the name
was a direct property (not a subproperty), causing for example Tween to
not report correctly a bad interpolate_property key.
A big refactor to the WebRTC module. API is now considered quite stable.
Highlights:
- Renamed `WebRTCPeer` to `WebRTCPeerConnection`.
- `WebRTCPeerConnection` no longer act as `PacketPeer`, it only handle the connection itself (a bit like `TCP_Server`)
- Added new `WebRTCDataChannel` class which inherits from `PacketPeer` to handle data transfer.
- Add `WebRTCPeerConnection.initialize` method to create a new connection with the desired configuration provided as dictionary ([see MDN docs](https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/RTCPeerConnection#RTCConfiguration_dictionary)).
- Add `WebRTCPeerConnection.create_data_channel` method to create a data channel for the given connection. The connection must be in `STATE_NEW` as specified by the standard ([see MDN docs for options](https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/createDataChannel#RTCDataChannelInit_dictionary)).
- Add a `data_channel_received` signal to `WebRTCPeerConnection` for in-band (not negotiated) channels.
- Renamed `WebRTCPeerConnection` `offer_created` signal to `session_description_created`.
- Renamed `WebRTCPeerConnection` `new_ice_candidate` signal to `ice_candidate_created`
binding_functions.size() and an instance's binding_data.size() can get out of sync. They sync up when an instance's bindings are requested. When binding functions are registered after creating an instance's bindings, the instance's bindings are out of sync until requested again. If they're never requested, they're never synced.
unregister_binding_functions indexes into binding_data, but only checks that its safe to index into binding_functions. When they're out of sync, indexing fails.
This revision checks that it's safe to index into binding_data.
Moved GDNative singletons discoverer from register_types to
GDNativeSingletonEditor.
Fix enable/disable switch in GDNativeLibrarySingletonEditor.
Separate `gdnative/singletons` and `gdnative/singletons_disabled`
project settings, keeping "on by default" behavior.
