fix(embedding): Use logged in user, update perms

[kgopal492]

SUMMARY

• Check if user is already logged in, before logging anonymous user for embedding
• Use user roles, rather than user id to filter view menu permissions (since anonymous users don't have user ids)

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.

Please upload report for BASE (pinterest-release-4.1.1@5204b5e). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
superset/views/dashboard/views.py	0.00%	2 Missing ⚠️
superset/embedded/view.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@                    Coverage Diff                     @@
##             pinterest-release-4.1.1      #53   +/-   ##
==========================================================
  Coverage                           ?   83.56%           
==========================================================
  Files                              ?      539           
  Lines                              ?    38673           
  Branches                           ?        0           
==========================================================
  Hits                               ?    32317           
  Misses                             ?     6356           
  Partials                           ?        0           

Flag	Coverage Δ
hive	48.93% <20.00%> (?)
postgres	76.77% <40.00%> (?)
presto	53.42% <20.00%> (?)
python	83.56% <40.00%> (?)
sqlite	76.24% <40.00%> (?)
unit	60.39% <20.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.