feat(error-handling): generalize snack error with fallback

[flomillot]

Summary

• Replace snackError({ messageTxt: error.message, ... }) patterns with snackWithFallback(snackError, error, { ... }) across the app so that structured errors raised by backendFetch/backendFetchJson are surfaced with their business code or technical details.
• Aligned with gridstudy migration (feat(error-handling): generalize snack error with fallback gridstudy-app#3452 and #3890).

Notes

• For announcement errors, we use new server errors, more complete

- In add dialogs (`add-user`/`add-group`/`add-profile`), the previously-ignored `_error` is now wired into `snackWithFallback` so server-side reasons reach the user.

[coderabbitai]

📝 Walkthrough

Walkthrough

Error handling across thirteen UI components has been unified to use a snackWithFallback() utility from @gridsuite/commons-ui. Direct calls to snackError({ messageTxt: error.message, headerId }) have been replaced with snackWithFallback(snackError, error, { headerId }), delegating error message derivation to the centralized utility while preserving header identifiers.

Changes

Error handling unification using snackWithFallback

Layer / File(s)	Summary
App and grid error handling src/components/App/App.tsx, src/components/Grid/GridTable.tsx	App config parameter fetch and grid data loading errors now use snackWithFallback(snackError, error, { headerId }) for consistent error notification instead of inline snackError({ messageTxt: error.message, ... }) calls.
Parameter update error handling src/components/parameters.tsx	Parameter update failures delegated to snackWithFallback to standardize error message handling.
Announcements error handling src/pages/announcements/add-announcement-form.tsx, src/pages/announcements/announcements-page.tsx	Announcement creation and list-fetch errors refactored to use snackWithFallback for unified error notification across the announcements feature.
Groups management error handling src/pages/groups/add-group-dialog.tsx, src/pages/groups/groups-table.tsx, src/pages/groups/modification/group-modification-dialog.tsx	Group creation, deletion, and modification error paths unified to delegate error handling to snackWithFallback instead of inline error construction.
Profiles management error handling src/pages/profiles/add-profile-dialog.tsx, src/pages/profiles/modification/profile-modification-dialog.tsx, src/pages/profiles/profiles-table.tsx	Profile creation, read, modification, and deletion error paths refactored to use snackWithFallback for consistent error message derivation.
Users management error handling src/pages/users/add-user-dialog.tsx, src/pages/users/modification/user-modification-dialog.tsx, src/pages/users/users-table.tsx	User creation, modification, and deletion error paths unified, including profile/group fetch failures, to use snackWithFallback for standardized error notification.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'feat(error-handling): generalize snack error with fallback' accurately and concisely summarizes the main objective of the pull request: replacing direct snackError calls with a generalized snackWithFallback wrapper across the application.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The PR description clearly explains the purpose of the changes: replacing snackError patterns with snackWithFallback to surface structured errors with business codes and technical details.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud