Remove stack overflow in EndpointFilterInvocationContexts (#49285)

* Remove potential stack overflow in EndpointFilterInvocationContexts

* Add ProhibitsUnsupportedListOperations test

* Add EndpointFilterInvocationContext list read operations implementation

* Fix test

* Handle null arguments

* Fix missing return

* Suppress xunit analyzer warning

* Add whitespace back

* Fix whitespace

Author: slang25