filters: enable MY Projects filter only for logged in users

[thelostone-mc]

Description

If the user hasn't logged in, the while My Projects tab is clickable with the gitcoin icon that encourages folks to login to github.
Post that , the page refreshes -> and the filters appear as usual

Checklist

• linter status: 100% pass
• changes don't break existing behavior
• commit message follows commit guidelines

Affected core subsystem(s)

• css

Fixes

• 'my projects' tab should be greyed out if user is not logged in #769

[thelostone-mc]

Could throw in a tooltip there if needed to state login to github to use these filters
@PixelantDesign @owocki

[codecov]

Codecov Report

Merging #772 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #772   +/-   ##
=======================================
  Coverage   33.95%   33.95%           
=======================================
  Files         101      101           
  Lines        5695     5695           
  Branches      666      666           
=======================================
  Hits         1934     1934           
  Misses       3685     3685           
  Partials       76       76

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[thelostone-mc]

Closing in favor of #771