Refactor and fix group filter

[GabrielCWT]

• Refactored showAllGroups to showUserGroups to follow the params being passed to the backend.
• Fixed the initial fetch not being filtered by group leading to long initial load time.

[coveralls]

Pull Request Test Coverage Report for Build 14017475877

Details

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 31.129%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/pages/academy/grading/Grading.tsx	0	2	0.0%

Totals
Change from base Build 13706980763:	0.0%
Covered Lines:	4887
Relevant Lines:	14807

---

💛 - Coveralls

[RichDom2185]

LGTM, thanks!