fix(smus): Add status validation for space operations (#8160)

## Description 

Added status checks for SageMaker space operations to prevent invalid
actions.

Picture: When opening remote connection:

<img width="507" height="302" alt="Screenshot 2025-10-08 at 4 20 19 PM"
src="https://github.com/user-attachments/assets/905cb51e-daf0-4db5-91ca-fbbc53de28d5"
/>


## fix done 

1. The stopSpace function now validates space status before attempting
to stop, showing appropriate warning messages for spaces already in
Stopped/Stopping states or currently Starting.

2. Also added status refresh before open remote connect

## Testing Done

code debug



---

- Treat all work as PUBLIC. Private `feature/x` branches will not be
squash-merged at release time.
- Your code changes must meet the guidelines in
[CONTRIBUTING.md](https://github.com/aws/aws-toolkit-vscode/blob/master/CONTRIBUTING.md#guidelines).
- License: I confirm that my contribution is made under the terms of the
Apache 2.0 license.

Author: PotatoWKY

packages/core/src/awsService/sagemaker/commands.ts

@@ -133,6 +133,16 @@ export async function stopSpace(
     ctx: vscode.ExtensionContext,
     sageMakerClient?: SagemakerClient
 ) {
+    await tryRefreshNode(node)
+    if (node.getStatus() === 'Stopped' || node.getStatus() === 'Stopping') {
+        void vscode.window.showWarningMessage(`Space ${node.spaceApp.SpaceName} is already in Stopped/Stopping state.`)
+        return
+    } else if (node.getStatus() === 'Starting') {
+        void vscode.window.showWarningMessage(
+            `Space ${node.spaceApp.SpaceName} is in Starting state. Wait until it is Running to attempt stop again.`
+        )
+        return
+    }
     const spaceName = node.spaceApp.SpaceName!
     const confirmed = await showConfirmationMessage({
         prompt: `You are about to stop this space. Any active resource will also be stopped. Are you sure you want to stop the space?`,
@@ -179,7 +189,7 @@ export async function openRemoteConnect(
         void vscode.window.showErrorMessage(ConnectFromRemoteWorkspaceMessage)
         return
     }
-
+    await tryRefreshNode(node)
     if (node.getStatus() === 'Stopped') {
         //  In case of SMUS, we pass in a SM Client and for SM AI, it creates a new SM Client.
         const client = sageMakerClient ? sageMakerClient : new SagemakerClient(node.regionCode)