Shell Agent logs multiple `block() interrupted`

[notthetup]

When running a long running command on the Shell, if we exit using Ctrl+C, Shell Agent spams the logs with many many (I counted 2876) block() interrupted messages. We should only log a single of this message.

1726545641550|INFO|org.arl.fjage.shell.ShellAgent/audio@39:block|block() interrupted
1726545641551|INFO|org.arl.fjage.shell.ShellAgent/audio@39:block|block() interrupted
1726545641551|INFO|org.arl.fjage.shell.ShellAgent/audio@39:block|block() interrupted
1726545641552|INFO|org.arl.fjage.shell.ShellAgent/audio@39:block|block() interrupted
1726545641552|INFO|org.arl.fjage.shell.ShellAgent/audio@39:block|block() interrupted
...
1726545641889|INFO|org.arl.fjage.shell.ShellAgent/audio@39:block|block() interrupted
1726545641889|INFO|org.arl.fjage.shell.ShellAgent/audio@39:block|block() interrupted
1726545641890|INFO|org.arl.fjage.shell.ShellAgent/audio@39:block|block() interrupted