collab: Make unsupported for MinGW toolchain (#23518)

Closes #23451

reverts #23117 for MinGW. collab can't be compiled for MinGW because
webrtc itself doesn't support MinGW compilers

Release Notes:

- N/A

crates/livekit_client/Cargo.toml

@@ -28,7 +28,6 @@ cpal = "0.15"
 futures.workspace = true
 gpui.workspace = true
 http_2 = { package = "http", version = "0.2.1" }
-livekit.workspace = true
 livekit_server.workspace = true
 log.workspace = true
 media.workspace = true
@@ -40,6 +39,9 @@ http_client.workspace = true
 smallvec.workspace = true
 image.workspace = true
 
+[target.'cfg(not(all(target_os = "windows", target_env = "gnu")))'.dependencies]
+livekit.workspace = true
+
 [target.'cfg(target_os = "macos")'.dependencies]
 core-foundation.workspace = true
 coreaudio-rs = "0.12.1"