Fix race that causes auto port forwarding setting to be ignored (microsoft#126481)

* Fix race in proc based port finding

* Check port auto forward setting after waiting

Fixes microsoft/vscode-remote-release#5208

Author: alexr00

src/vs/workbench/contrib/remote/browser/remoteExplorer.ts

@@ -488,7 +488,15 @@ class ProcAutomaticPortForwarding extends Disposable {
 	) {
 		super();
 		this.notifier = new OnAutoForwardedAction(notificationService, remoteExplorerService, openerService, externalOpenerService, tunnelService, hostService, logService);
-		this._register(configurationService.onDidChangeConfiguration(async (e) => {
+		this.initialize();
+	}
+
+	private async initialize() {
+		if (!this.remoteExplorerService.tunnelModel.environmentTunnelsSet) {
+			await new Promise<void>(resolve => this.remoteExplorerService.tunnelModel.onEnvironmentTunnelsSet(() => resolve()));
+		}
+
+		this._register(this.configurationService.onDidChangeConfiguration(async (e) => {
 			if (e.affectsConfiguration(PORT_AUTO_FORWARD_SETTING)) {
 				await this.startStopCandidateListener();
 			}
@@ -524,14 +532,13 @@ class ProcAutomaticPortForwarding extends Disposable {
 			this.portsFeatures.dispose();
 		}
 
-		if (!this.remoteExplorerService.tunnelModel.environmentTunnelsSet) {
-			await new Promise<void>(resolve => this.remoteExplorerService.tunnelModel.onEnvironmentTunnelsSet(() => resolve()));
-		}
-
 		// Capture list of starting candidates so we don't auto forward them later.
 		await this.setInitialCandidates();
 
-		this.candidateListener = this._register(this.remoteExplorerService.tunnelModel.onCandidatesChanged(this.handleCandidateUpdate, this));
+		// Need to check the setting again, since it may have changed while we waited for the initial candidates to be set.
+		if (this.configurationService.getValue(PORT_AUTO_FORWARD_SETTING)) {
+			this.candidateListener = this._register(this.remoteExplorerService.tunnelModel.onCandidatesChanged(this.handleCandidateUpdate, this));
+		}
 	}
 
 	private async setInitialCandidates() {