🗑️ chore: Remove Deprecated Project Model and Associated Fields (#11773)

* chore: remove projects and projectIds usage

* chore: empty line linting

* chore: remove isCollaborative property across agent models and related tests

- Removed the isCollaborative property from agent models, controllers, and tests, as it is deprecated in favor of ACL permissions.
- Updated related validation schemas and data provider types to reflect this change.
- Ensured all references to isCollaborative were stripped from the codebase to maintain consistency and clarity.

api/server/services/start/migration.js

@@ -6,7 +6,6 @@ const {
   checkAgentPermissionsMigration,
   checkPromptPermissionsMigration,
 } = require('@librechat/api');
-const { getProjectByName } = require('~/models/Project');
 const { Agent, PromptGroup } = require('~/db/models');
 const { findRoleByIdentifier } = require('~/models');
 
@@ -20,7 +19,6 @@ async function checkMigrations() {
       mongoose,
       methods: {
         findRoleByIdentifier,
-        getProjectByName,
       },
       AgentModel: Agent,
     });
@@ -33,7 +31,6 @@ async function checkMigrations() {
       mongoose,
       methods: {
         findRoleByIdentifier,
-        getProjectByName,
       },
       PromptGroupModel: PromptGroup,
     });