fix: Avoid data-loss when creating new members (#3392)

[zFernand0]

Proposed changes

• Cherry-pick fix: Avoid data-loss when creating new members #3392

Release Notes

Milestone: 3.1.0

Changelog: Fixed data loss when creating a data set member with the same name as an existing member. When creating a new member, the user is now prompted to replace it if the member already exists.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Enhancement (non-breaking change which adds or improves functionality)
• Breaking change (a change that would cause existing functionality to not work as expected)
• Documentation (Markdown, README updates)
• Other (please specify above in "Proposed changes" section)

Checklist

General

• I have read the CONTRIBUTOR GUIDANCE wiki
• All PR dependencies have been merged and published (if applicable)
• A GIF or screenshot is included in the PR for visual changes
• The pre-publish command has been executed:
  • v2 and below: yarn workspace vscode-extension-for-zowe vscode:prepublish
  • v3: pnpm --filter vscode-extension-for-zowe vscode:prepublish

Code coverage

• There is coverage for the code that I have added
• I have added new test cases and they are passing
• I have manually tested the changes

Deployment

• I have added developer documentation (if applicable)
• Documentation should be added to Zowe Docs
  • If you're an outside contributor, please post in the #zowe-doc Slack channel to coordinate documentation.
  • Otherwise, please check with the rest of the squad about any needed documentation before merging.
• These changes may need ported to the appropriate branches (list here):

Further comments

[github-actions]

📅 Suggested merge-by date: 1/28/2025

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.18%. Comparing base (b2351d2) to head (416c78f).
Report is 1 commits behind head on release/3.1.

Additional details and impacted files

@@             Coverage Diff              @@
##           release/3.1    #3397   +/-   ##
============================================
  Coverage        93.18%   93.18%           
============================================
  Files              120      120           
  Lines            12486    12490    +4     
  Branches          2835     2837    +2     
============================================
+ Hits             11635    11639    +4     
  Misses             850      850           
  Partials             1        1           

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[JillieBeanSim]

LGTM! Thanks for the fix @zFernand0

[traeok]

Thanks for cherry-picking @zFernand0! LGTM