fix: non null check on published action (#40598)

## Description
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Fixes #`Issue Number`  
_or_  
Fixes `Issue URL`
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## Automation

/ok-to-test tags="@tag.All"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!TIP]
> 🟢 🟢 🟢 All cypress tests have passed! 🎉 🎉 🎉
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/14879842425>
> Commit: 7b958d423567766bc8531425e5cb045c45752567
> <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=14879842425&attempt=1"
target="_blank">Cypress dashboard</a>.
> Tags: `@tag.All`
> Spec:
> <hr>Wed, 07 May 2025 10:34:51 UTC
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## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Bug Fixes**
- Improved reliability during app import by preventing potential errors
when handling actions without published versions.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: Nilesh Sarupriya <20905988+nsarupr@users.noreply.github.com>

app/server/appsmith-server/src/main/java/com/appsmith/server/imports/internal/partial/PartialImportServiceCEImpl.java

@@ -64,6 +64,7 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
@@ -408,14 +409,16 @@ public class PartialImportServiceCEImpl implements PartialImportServiceCE {
             }
 
             applicationJson.getActionList().forEach(action -> {
-                action.getPublishedAction().setPageId(pageName);
                 action.getUnpublishedAction().setPageId(pageName);
+                if (Objects.nonNull(action.getPublishedAction())) {
+                    action.getPublishedAction().setPageId(pageName);
                     if (action.getPublishedAction().getCollectionId() != null) {
                         String collectionName =
                                 action.getPublishedAction().getCollectionId().split("_")[1];
                         action.getPublishedAction().setCollectionId(pageName + "_" + collectionName);
                         action.getUnpublishedAction().setCollectionId(pageName + "_" + collectionName);
                     }
+                }
 
                 String actionName = action.getId().split("_")[1];
                 action.setId(pageName + "_" + actionName);