RSS button should not be shown when the user has no access to RSS feed

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X, Master
• Fix Version/s: 7.2.X, 7.3.10 DXP FP1, 7.3.10.1 DXP SP1, 7.3.6 CE GA7, 7.3.X, Master
• Component/s: Blogs
• Labels:
  • ee-ts
  • liferay-dxp-73-sp1
  • liferay-fixpack-dxp-1-7310
  • liferay-fixpack-dxp-9-7210
• Branch Version/s:
  7.3.x, 7.2.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 3
• Sprint: LIMA | QA Sprint 1
• Git Pull Request: https://github.com/liferay-lima/liferay-portal/pull/930

Reproduction steps

1. Go to Site Admin -> Configuration -> Settings -> General -> Membership options -> Membership type and select "Private"
2. Create some blog.
3. Add Blogs widget to your page.
4. Log out.
5. As 'Guest' user click on "RSS" button on right top corner of Blogs Widget
6. Assert you get an error because you are not allowed to see that content (See LPS-97483 for further information)

Expected behavior
If 'Guest' user can not see RSS feed, the "RSS" button should not be shown.

Actual behavior
"RSS" button is shown even when is going to lead into an error.