One-time literals cause infdig when an interceptor fn is used

[jbedard]

Due to the interceptor wrapper for one-time bindings being different then the regular one.

This means $watch($parse("{foo: bar}", noop)) will be fine, but $watch($parse("::{foo: bar}", noop)) may throw an infdig error. It would be nice if these behaved the same other then the one-time part.

ng-class works around this by doing a deep-watch. It would be nice if such a workaround was done automatically by $parse/$watch, and preferably did not require deep watching.

[jbedard]

In addition to the hack in ng-class to avoid this, other areas like $interpolate do not workaround this issue so things like $interpolate('{{ ::{x: x} }}') produce the incorrect result (while watching) until the one-time is complete.