Enable SSH Generator Feature Flag and polish UI

[carlos-zamora]

Enables the SSH Dynamic Profile Generator feature flag now that the Settings UI is better equipped to handle it. Since the generator was first introduced, the settings UI has grown to include an Extensions page to disable the generator (if desired) as well as a New Tab Menu page to manage how to display the generated profiles in the dropdown.

Updated the profile generator and profile icons to use font icons (StorageNetworkWireless and PC1 respectively).

This also required a minor change to the extensions page template selector. Using our icon converter sets a font size on font icons, which results in a small icon. Removing that font size setter is risky (I tried it and it resulted in clipping font icons whenever they're used in the profile dropdowns). So instead, I just created a separate entry in the template selector that creates proper styling for the font icon if it's detected.

Closes #15007

[carlos-zamora]

[lhecker]

Does this add the SSH profiles by default already? I know we've in the past talked about adding profiles only when the user wants them, so I was wondering if we're making that part of 1.24...

[lhecker]

Seems like this should be AlwaysEnabled then?

[carlos-zamora]

Nope! The SSH code is hidden behind a feature flag on Stable builds so I'm making sure we still don't expose it yet. I want to make sure the experience feels right with the Extensions page. Once the Extensions page goes to Stable, we can just remove the feature flag altogether.

WindowsInbox is also one that's omitted. Same deal there.

[carlos-zamora]

Does this add the SSH profiles by default already? I know we've in the past talked about adding profiles only when the user wants them, so I was wondering if we're making that part of 1.24...

Yeah, the profiles are added by default, but can be managed using disabledProfileSources in the JSON or the Extensions page in the SUI.

The concept of "disabling by default" is a bit difficult here because we'd have to patch disabledProfileSources to include the SSH generator. I think the way we've handled that before is by updating defaults.json. That way anybody that has disabledProfileSources defined in their settings.json is unaffected vs those who don't have it defined inherit it.

Happy to add that change in, but I just want to make sure we have consensus. I'll start a thread.

[DHowett]

Let's hold for the discussion.

The base branch was changed.

[carlos-zamora]

Generator icon:

Profile icons:

Some other ideas from segoe fluent icons:

I'm guessing we want to have the generator icon and profile icons be the same (which is an easy fix now).
@DHowett any of these stand out to you? I'm actually leaning StorageNetworkWireless or PC1. (I personally like the branding of "network")

[DHowett]

Let's do PC1 for the profiles

[DHowett]

oh, i'm OK with the profile and the generator having different icons!

[carlos-zamora]