[azure-ai-projects] Update tsp-location to spec commit ff6c484 (add draft flag)

Bumps tsp-location.yaml to spec commit ff6c484105183f5dc963cff8e29d71f86e693d95
which adds:
- 'draft' parameter on create_version
- 'include_drafts' query parameter on list_versions

Spec PR: Azure/azure-rest-api-specs#43979

Note: Regeneration requires emitter 0.63.2+ (@typespec/compiler 1.13.0)
because the spec now uses TypeSpec 1.13 tuple literal syntax in
tag-definitions.tsp. The eng/emitter-package.json bump should be
handled separately as a repo-wide change.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: akaila

sdk/ai/azure-ai-projects/tsp-location.yaml

@@ -1,4 +1,4 @@
 directory: specification/ai-foundry/data-plane/Foundry
-commit: e041b5a178996b62fe86a267dc468df5c1677c54
+commit: ff6c484105183f5dc963cff8e29d71f86e693d95
 repo: Azure/azure-rest-api-specs
 additionalDirectories: