Allow interacted field of matStep in the stepper control to be editable via property binding

[Exocomp]

Please describe the feature you would like to request.

The interacted field of the matStep (https://material.angular.io/components/stepper/api) is currently not decorated with @input() therefore it is not possible to use property binding to modify it.

What is the use-case or motivation for this proposal?

Calling the Stepper Previous() or Next() method ends up calling "CdkStepper.prototype._anyControlsInvalidOrPending" where there is a check for "!step.interacted". I have a use case where I populate the steps and then set a particular step as the selected step. At that point when I call next or previous since the steps interacted field is false by default I'm not able to go backward or forward through the stepper.

At the moment my only way to solve this issue is to iterate the stepper's "_steps" and set the "interacted" field to true. This is not an ideal solution.

Is there anything else we should know?

Version: 7.2.0

[jelbourn]

This is potentially a solution for #14067

[angular-robot]

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[sagrawal31]

Any update on this?