feat: toast on 400+ errors

[kevin-hashimoto]

• feat: 400+ errors display an error toast globally using notistack(mui underneath) for imperative handling. closes LCFS - Show red toast on network errors #1441

note: mui v6 has their own implementation via their toolpad package. would be good to look into later when/if upgrading mui to v6.

[github-actions]

Frontend Test Results

  1 files  ±0  116 suites  ±0   38s ⏱️ -1s
390 tests ±0  370 ✅ ±0  20 💤 ±0  0 ❌ ±0 
392 runs  ±0  372 ✅ ±0  20 💤 ±0  0 ❌ ±0 

Results for commit 1ee6405. ± Comparison against base commit 04a7a3b.

♻️ This comment has been updated with latest results.

[github-actions]

Backend Test Results

501 tests  ±0   501 ✅ ±0   1m 49s ⏱️ -1s
  1 suites ±0     0 💤 ±0 
  1 files   ±0     0 ❌ ±0 

Results for commit 1ee6405. ± Comparison against base commit 04a7a3b.

♻️ This comment has been updated with latest results.

[dhaselhan]

Definitely agree that Material V5 Snackbar is lacking an imperative interface. Nice work.