CSTACKEX-321: when nothing is changed in volume resize wizard directl… (#110)

Calling resizeVolume with the existing volume size still invoked the
storage driver, causing an unnecessary driver resize request for
volumes.
### Description

This PR...
<!--- Describe your changes in DETAIL - And how has behaviour
functionally changed. -->

<!-- For new features, provide link to FS, dev ML discussion etc. -->
<!-- In case of bug fix, the expected and actual behaviours, steps to
reproduce. -->

<!-- When "Fixes: #<id>" is specified, the issue/PR will automatically
be closed when this PR gets merged -->
<!-- For addressing multiple issues/PRs, use multiple "Fixes: #<id>" -->
<!-- Fixes: # -->

<!---
*******************************************************************************
-->
<!--- NOTE: AUTOMATION USES THE DESCRIPTIONS TO SET LABELS AND PRODUCE
DOCUMENTATION. -->
<!--- PLEASE PUT AN 'X' in only **ONE** box -->
<!---
*******************************************************************************
-->

### Types of changes

- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] New feature (non-breaking change which adds functionality)
- [X] Bug fix (non-breaking change which fixes an issue)
- [ ] Enhancement (improves an existing feature and functionality)
- [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
- [ ] Build/CI
- [ ] Test (unit or integration test code)

### Feature/Enhancement Scale or Bug Severity

#### Feature/Enhancement Scale

- [ ] Major
- [ ] Minor

#### Bug Severity

- [ ] BLOCKER
- [ ] Critical
- [ ] Major
- [X] Minor
- [ ] Trivial

### Screenshots (if appropriate):
Before Patch API is still called in case of no changes in the wizard:
<img width="1423" height="1034" alt="Screenshot 2026-09-24 at 4 33
33 PM"
src="https://github.com/user-attachments/assets/5480986e-bc79-4bc7-b05c-62077c2cc93e"
/>

actually resizes (IN UI)
<img width="1441" height="638" alt="Screenshot 2026-09-24 at 4 36 00 PM"
src="https://github.com/user-attachments/assets/8430eaa3-947e-41d4-8573-518f7831d7f0"
/>


after the fix Patch api is not called :
<img width="1393" height="1035" alt="Screenshot 2026-09-24 at 4 17
52 PM"
src="https://github.com/user-attachments/assets/b53e1146-560a-437a-9b0c-501be9ec4d76"
/>

Shows success immediately:
<img width="1471" height="728" alt="Screenshot 2026-09-24 at 4 28 37 PM"
src="https://github.com/user-attachments/assets/9cdd57b0-2b1f-4550-9830-46f87c439061"
/>



### How Has This Been Tested?

<!-- Please describe in detail how you tested your changes. -->
<!-- Include details of your testing environment, and the tests you ran
to -->

#### How did you try to break this feature and the system with this
change?

<!-- see how your change affects other areas of the code, etc. -->

<!-- Please read the
[CONTRIBUTING](https://github.com/apache/cloudstack/blob/main/CONTRIBUTING.md)
document -->

Author: sathvikaragi

server/src/main/java/com/cloud/storage/VolumeApiServiceImpl.java

@@ -1446,11 +1446,12 @@ public VolumeVO resizeVolume(ResizeVolumeCmd cmd) throws ResourceAllocationExcep
             if (currentSize != newSize || !compareEqualsIncludingNullOrZero(newMaxIops, volume.getMaxIops()) || !compareEqualsIncludingNullOrZero(newMinIops, volume.getMinIops())) {
                 volumeResizeRequired = true;
             }
-            if (!volumeMigrateRequired && !volumeResizeRequired && newDiskOffering != null) {
-                _volsDao.updateDiskOffering(volume.getId(), newDiskOffering.getId());
+            if (!volumeMigrateRequired && !volumeResizeRequired) {
                 volume = _volsDao.findById(volume.getId());
-                updateStorageWithTheNewDiskOffering(volume, newDiskOffering);
-
+                if (newDiskOffering != null) {
+                    _volsDao.updateDiskOffering(volume.getId(), newDiskOffering.getId());
+                    updateStorageWithTheNewDiskOffering(volume, newDiskOffering);
+                }
                 return volume;
             }