[GS] Excluding specific search results

[ryankeairns]

Related to #72331

Within the 'Apps' results there are specific items that we would like to exclude. In effect, we'll need a mechanism to remove the following, specific results:

• App Error
• Dashboard Mode

[pgayvallet]

We got two options for this:

1. Simply exclude from results all application that are in hidden mode (navLinkStatus: AppNavLinkStatus.hidden), as we are already doing for chromeless or disabled apps.
2. Add an additional option when registering applications to allow manual opt-out of the results.

I feel like option 1 answer our needs efficiently, and should be good enough to start?

[ryankeairns]

@pgayvallet option 1 seems like a reasonable solution. Please proceed, thank you!