fix: validate authz perms with studio instead of LMS

[asadali145]

Description

Calls studio API for Authz permission check instead of LMS to avoid Cross origin request

Testing instructions

• Visit the v2 library and monitor the network tab http://studio.local.openedx.io:8001/api/authz/v1/permissions/validate/me
• It should return 200

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.56%. Comparing base (df79861) to head (1023739).
⚠️ Report is 18 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2947      +/-   ##
==========================================
+ Coverage   95.51%   95.56%   +0.04%     
==========================================
  Files        1329     1349      +20     
  Lines       30557    31126     +569     
  Branches     6713     7069     +356     
==========================================
+ Hits        29186    29745     +559     
- Misses       1315     1319       +4     
- Partials       56       62       +6     

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[asadali145]

@bradenmacdonald can you please review this PR?

[bradenmacdonald]

Makes sense to me, but I'm not super familiar with this. @rodmgwgu can you take a quick look?

[bradenmacdonald]

This appears to be the only use of getApiUrl, so can you just delete it entirely? Actually I think you can delete the whole utils.ts file, and just move getStudioApiUrl into this file, and/or get rid of it altogether. It's not really necessary as it's also only used in one place. If we do keep it, I think it should be refactored as auth-specific like const getAuthApiUrl = (path: string = '') => ${getConfig().STUDIO_BASE_URL}/api/authz/${path}; and kept in the api.ts file.

[asadali145]

Thanks @bradenmacdonald, I kept the unused intentionally as getStudioApiUrl was also there unused, but I have removed it now and refactored the code.

[rodmgwgu]

Good catch, makes total sense, thanks!