now that we have a core error library, we can start swapping out the percolation of graph api errors with core error sentinels. This PR begins that process by adding a centralized transformer to the graph service handlers that ensures all calls produce the same set of core errors according to some standard categorizations. This is just an initial step, and does not transfer all graph errors into core sentinels.
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#### Does this PR need a docs update or release note?
- [x] ⛔ No
#### Type of change
- [x] 🤖 Supportability/Tests
#### Issue(s)
* #4685
#### Test Plan
- [x] ⚡ Unit test
- [x] 💚 E2E
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