fix(ci): properly disable audio feature for musl builds

The previous fix (PR #100) didn't fully disable the audio feature because
the workspace dependency still had default-features enabled.

This changes the workspace dependency for cortex-tui to have
default-features = false, allowing cortex-cli to properly control
which features are enabled via its own feature flags.

Author: echobt

Cargo.toml

@@ -195,7 +195,7 @@ cortex-app-server = { path = "src/cortex-app-server" }
 cortex-commands = { path = "src/cortex-commands" }
 cortex-storage = { path = "src/cortex-storage" }
 cortex-core = { path = "src/cortex-core" }
-cortex-tui = { path = "src/cortex-tui" }
+cortex-tui = { path = "src/cortex-tui", default-features = false }
 cortex-tui-capture = { path = "src/cortex-tui-capture" }
 cortex-tui-components = { path = "src/cortex-tui-components" }
 cortex-update = { path = "src/cortex-update" }