Playground streaming mode is not working anymore

[jeffmaury]

Bug description

Playground now takes a while after a request is sent and seems streaming is not enabled anymore

Seems to MCP enablement related

Operating system

Win11Pro

Installation Method

None

Version

next (development version)

Steps to reproduce

No response

Relevant log output

Additional context

No response

[manusa]

Streaming IS NOT supported when using tools (MCP) (Stated in the PR description)

Comment from @manusa in #2961:

This might be because you have the mcp-servers.json file which enables the MCP tooling feature.
By removing or renaming the file, everything should work as expected.

Maybe I can also add additional conditions to prevent MCP to be enabled on incompatible models ---> update the default catalog with some label/property?

The mcp-settings.json is used as a feature flag.
I assume most of you are facing this issue because you still have the file after testing #2949