Fix deployment to stopped Function Apps with clear error message (#4664)

* Initial plan

* Add check to block deployment to stopped Function Apps with clear error message

Co-authored-by: alexweininger <12476526+alexweininger@users.noreply.github.com>

* Revert main.js to original state

Co-authored-by: nturinski <5290572+nturinski@users.noreply.github.com>

* Fix case sensitivity in stopped state check and remove deploy test file

Co-authored-by: nturinski <5290572+nturinski@users.noreply.github.com>

* Don't suppress error message

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: alexweininger <12476526+alexweininger@users.noreply.github.com>
Co-authored-by: nturinski <5290572+nturinski@users.noreply.github.com>
Co-authored-by: Nathan <naturins@microsoft.com>

Author: 3 people

src/commands/deploy/deploy.ts

@@ -92,6 +92,11 @@ async function deploy(actionContext: IActionContext, arg1: vscode.Uri | string |
     await node.initSite(context);
     const site = node.site;
 
+    // Check if the function app is stopped and block deployment with a clear error message
+    if (site.rawSite.state?.toLowerCase() === 'stopped') {
+        throw new Error(localize('functionAppStoppedError', 'Cannot deploy to function app "{0}" because it is currently stopped. Please start the function app before deploying.', site.fullName));
+    }
+
     const subscriptionContext: ISubscriptionContext & { subscription: AzureSubscription } = {
         ...node.subscription,
         subscription: await subscriptionExperience(context, ext.rgApiV2.resources.azureResourceTreeDataProvider, {