resident compiler failing on GitHub actions (ubuntu)

[jakemac53]

See https://github.com/dart-lang/ai/actions/runs/14981515397/job/42087185158#step:10:14

[StdErr from server dart]: Error: A connection to the Resident Frontend Compiler could not be established. Restarting the Resident Frontend Compiler and retrying compilation.
[StdErr from server dart]: Error: A connection to the Resident Frontend Compiler could not be established. Restarting the Resident Frontend Compiler and retrying compilation.
[StdErr from server dart]: Failed to build bin/main.dart:
[StdErr from server dart]: Bad state: Error: Bad state: A server is already running.