fix(macos): remove internal From implementation

[madsmtm]

Removes impl From<ActivationPolicy> for NSApplicationActivationPolicy.

This is needed to avoid publicly exposing a dependency on cocoa, which will allow using objc2 in the future.

[github-actions]

Package Changes Through 68f0f99

There are 1 changes which include tao with minor

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
tao	0.31.1	0.32.0

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[amrbashir]

Thank you.

I should also note that we may never refactor this crate to use objc2 as it is currently in maintenance mode only, and I still think we should go back to use winit.

[madsmtm]

Whoops, didn't see your comment before I posted #1049, let's discuss it over there?

[amrbashir]

I suspected you maybe working on it so I wanted to give you a heads up, thanks anyways, we really appreciate it