Fix outdated workflows that refer to ZWESVSTC

[1000TurquoisePogs]

When reviewing workflows I discovered that they're prompting the user for things that make no sense in modern zowe.

They refer to 2 STCs: a required ZWESVSTC and an optional ZWELNCH/ZWESLSTC.

Since zowe v2.0 in 2022, ZWESVSTC was removed and ZWESLSTC became required.
So, I have cleaned up the workflow by updating references to these items.

Resolves #3416

[github-actions]

build 5529 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9741050828

[github-actions]

Test workflow 4880 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.16.0-PR-3881/zowe-2.16.0-pr-3881-5529-20240701085105.pax
Running on machine: zzow07
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9741175805

[github-actions]

build 5537 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9742825337

[github-actions]

Test workflow 4890 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.16.0-PR-3881/zowe-2.16.0-pr-3881-5537-20240701105646.pax
Running on machine: zzow08
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9742957800

[github-actions]

build 5556 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9751511483

[github-actions]

Test workflow 4907 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.17.0-PR-3881/zowe-2.17.0-pr-3881-5556-20240701215555.pax
Running on machine: zzow07
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/9751578730