📧 fix: Case-Insensitive Domain Matching (#9868)

* chore: move domain related functions to `packages/api`

* fix: isEmailDomainAllowed for case-insensitive domain matching

- Added tests to validate case-insensitive matching for email domains in various scenarios.
- Updated isEmailDomainAllowed function to convert email domains to lowercase for consistent comparison.
- Improved handling of null/undefined entries in allowedDomains.

* ci: Mock isEmailDomainAllowed in samlStrategy tests

- Added a mock implementation for isEmailDomainAllowed to return true in samlStrategy tests, ensuring consistent behavior during test execution.

* ci: Update import of isEmailDomainAllowed in ldapStrategy tests

- Changed the import of isEmailDomainAllowed from the domains service to the api package for consistency and to reflect recent refactoring.

api/server/services/ToolService.js

@@ -1,7 +1,12 @@
 const { sleep } = require('@librechat/agents');
 const { logger } = require('@librechat/data-schemas');
 const { tool: toolFn, DynamicStructuredTool } = require('@langchain/core/tools');
-const { getToolkitKey, hasCustomUserVars, getUserMCPAuthMap } = require('@librechat/api');
+const {
+  getToolkitKey,
+  hasCustomUserVars,
+  getUserMCPAuthMap,
+  isActionDomainAllowed,
+} = require('@librechat/api');
 const {
   Tools,
   Constants,
@@ -26,7 +31,6 @@ const { processFileURL, uploadImageBuffer } = require('~/server/services/Files/p
 const { getEndpointsConfig, getCachedTools } = require('~/server/services/Config');
 const { manifestToolMap, toolkits } = require('~/app/clients/tools/manifest');
 const { createOnSearchResults } = require('~/server/services/Tools/search');
-const { isActionDomainAllowed } = require('~/server/services/domains');
 const { recordUsage } = require('~/server/services/Threads');
 const { loadTools } = require('~/app/clients/tools/util');
 const { redactMessage } = require('~/config/parsers');