fix: use the new ssh disconnect callback

Toolbox provides two callbacks, one before an SSH connection is established and another one
which executes when the ssh connection is stopped. The latter was deprecated in the favor
of a new callback that also provides hints on whether the user requested the disconnect.

Author: fioan89

src/main/kotlin/com/coder/toolbox/CoderRemoteEnvironment.kt

@@ -203,7 +203,7 @@ class CoderRemoteEnvironment(
 
     private fun File.doesNotExists(): Boolean = !this.exists()
 
-    override fun afterDisconnect() {
+    override fun afterDisconnect(isManual: Boolean) {
         context.logger.info("Stopping the network metrics poll job for $id")
         pollJob?.cancel()
         this.connectionRequest.update { false }