[Bug] Property 'appFeatures' does not exist on type 'BaseContext'

[dziomek-soldevelo]

Describe the bug
The SDK doesn't have a type for BaseContext -> property named 'appFeature'.

Steps to reproduce

1. Embed the SDK in an app
2. Call monday.listen('context').then(res => ...);
3. IDE throws an error:

Property 'appFeatures' does not exist on type 'BaseContext | AppFeatureBoardViewContext | AppFeatureAiBoardMainMenuHeaderContext | ... 10 more ... | AppFeatureDocActionsContext'.
Property 'appFeatures' does not exist on type 'BaseContext'.ts(2339)

Expected behavior
BaseContext contains typed 'appFeature' property.

Additional information
The appFeature property is accessible from returned context and looks like this:

{
  name: "Some feature name - v1",
  type: "AppFeatureItemMenuAction"
}

Tested for AppFeatureItemMenuActionContext and AppFeatureItemBatchActionContext.