update search filter icons on left hand menu

[erincd]

Not that we use a star to indicate positions, but the current position filter is definitely using the PoAM icon (though maybe we're getting rid of that too in the new summary design)

@efo-usds can you advise? After, I'll make an implementation task

[efo-usds]

I'll update the icons @erincd

[erincd]

thanks!

[efo-usds]

Updated:

Reference: