[TypeSpec] Generate SDK for TypeSpec project

## SDK generate request for TypeSpec project

Request to generate SDK by Copilot. **Do not release SDK**
SDK will be released later by service owner.

**Release Plan**: https://web.powerapps.com/apps/3a732482-e479-4ec1-99c8-359f2c2d3f53?release-plan-id=fdd543cd-cd26-f111-8341-000d3a5a7991
**TypeSpec project path**: specification/contosowidgetmanager/Contoso.WidgetManager
**API spec pull request link**: https://github.com/Azure/azure-rest-api-specs/pull/35573
**SDK release type**: 100000000
**API spec version**: 2026-03-01-preview
**Spec Type**: TypeSpec
**Language**: Python,JavaScript,.NET,Java
**Release plan work item ID**: 33497
**Plane**: 340030001

**Contacts**: e490f2e8-ac0e-ed11-82e5-000d3a35a870

**Notes**:
SDK is generated by GitHub agent workflow

Generate SDK for the TypeSpec project and update the generated SDK details in the release plan using release plan work item. Generate a summary and update it back in the linked GitHub issue once SDK pull requests are generated.

Start with the TypeSpec project at specification/contosowidgetmanager/Contoso.WidgetManager and the GitHub agent workflow used to generate SDKs. Review API spec pull request 35573 and the release plan work item 33497 before running generation for Python, JavaScript, .NET, and Java. Done means generated SDK pull requests exist, release-plan details are updated, and a summary is posted here without releasing the SDK.

Written by the indexing model from the issue text.