Remove projects filtering from material settings
Remove projects filtering from material settings

- it's not necessary anyway, as this section is visible only for admins
- it fixes the tests (rspec couldn't find `policy` helper in some cases, shared examples)

[#111001332]
[#111001376]
[#111001560]
[#111001428]

concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse