Add file support to agent chat (#13187)

https://github.com/user-attachments/assets/911d5d8d-cc2e-4c18-9f93-2663d84ff9ef

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Co-authored-by: Raphaël Bosi <71827178+bosiraphael@users.noreply.github.com>
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Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Félix Malfait <felix@twenty.com>
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Co-authored-by: MD Readul Islam <99027968+readul-islam@users.noreply.github.com>
Co-authored-by: readul-islam <developer.readul@gamil.com>
Co-authored-by: Thomas des Francs <tdesfrancs@gmail.com>
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Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

packages/twenty-server/src/modules/workflow/workflow-builder/workflow-step/workflow-version-step.workspace-service.ts

@@ -619,7 +619,7 @@ export class WorkflowVersionStepWorkspaceService {
         const newAgent = await this.agentService.createOneAgentAndFirstThread(
           {
             label: 'AI Agent Workflow Step',
-            name: 'ai-agent-workflow',
+            name: `ai-agent-workflow-${newStepId}`,
             description: 'Created automatically for workflow step',
             prompt: '',
             modelId: 'auto',
@@ -635,16 +635,6 @@ export class WorkflowVersionStepWorkspaceService {
           );
         }
 
-        const userWorkspaceId =
-          this.scopedWorkspaceContextFactory.create().userWorkspaceId;
-
-        if (userWorkspaceId) {
-          await this.agentChatService.createThread(
-            newAgent.id,
-            userWorkspaceId,
-          );
-        }
-
         return {
           id: newStepId,
           name: 'AI Agent',