Allow org admin to create teams on UI (#8407)

* fix(client_initialization_utils.py): handle custom llm provider set with valid value not from model name

* fix(handle_jwt.py): handle groups not existing in jwt token

if user not in group, this won't exist

* fix(handle_jwt.py): add new `enforce_team_based_model_access` flag to jwt auth

allows proxy admin to enforce user can only call model if team has access

* feat(navbar.tsx): expose new dropdown in navbar - allow org admin to create teams within org context

* fix(navbar.tsx): remove non-functional cogicon

* fix(proxy/utils.py): include user-org memberships in `/user/info` response

return orgs user is a member of and the user role within org

* feat(organization_endpoints.py): allow internal user to query `/organizations/list` and get all orgs they belong to

enables org admin to select org they belong to, to create teams

* fix(navbar.tsx): show change in ui when org switcher clicked

* feat(page.tsx): update user role based on org they're in

allows org admin to create teams in the org context

* feat(teams.tsx): working e2e flow for allowing org admin to add new teams

* style(navbar.tsx): clarify switching orgs on UI is in BETA

* fix(organization_endpoints.py): handle getting but not setting members

* test: fix test

* fix(client_initialization_utils.py): revert custom llm provider handling fix - causing unintended issues

* docs(token_auth.md): cleanup docs

litellm/proxy/utils.py

@@ -1415,7 +1415,8 @@ class PrismaClient:
                     if key_val is None:
                         key_val = {"user_id": user_id}
                     response = await self.db.litellm_usertable.find_unique(  # type: ignore
-                        where=key_val  # type: ignore
+                        where=key_val,  # type: ignore
+                        include={"organization_memberships": True},
                     )
                 elif query_type == "find_all" and key_val is not None:
                     response = await self.db.litellm_usertable.find_many(