Bulk Deletion of VSAM Data Sets - Unresponsive UI and Excessive Queued List Operations

Describe the bug

When bulk deleting VSAM data sets, the tree view is reloaded after every individual deletion. If a large number of data sets are being deleted, this results in many calls to the dataset list APIs, which renders further actions (i.e. a new dataset filter) completely unresponsive until the queued list operations are completed.

To Reproduce

Attempt to delete a number (~25) of VSAM data sets with multi-select, and observe the Output view for Zowe Explorer.

Expected behavior

Nodes disappear as each delete succeeds, and the list is refreshed once all operations are completed. The Tree UI is responsive once all operations complete.

Screenshots

Desktop (please complete the following information):

• OS: MacOS Sequoia (15.7.3)
• Zowe Explorer Version: 3.4.0
• (Optional) Zowe CLI Version: N/A
• (Optional) Do you have secure credentials enabled? N/A
• (Optional) Are you using a custom credential manager? N/A

Additional context