Made the Membership link appear on navbar when logged in

[JereNwa]

Resolves:

#9910

Changes:

When you log into Scratch, you cannot see the membership link on the nav bar. I’ve made so that it is now visible.

Test Coverage:

[sorry, don’t have image yet.]

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[JereNwa]

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[redspacecat]

I'm pretty sure not seeing the membership button when logged in is intentional.