Cherry pick changes from MLE-22732 fix

[vitalykorolev]

Description

This PR is to test dependency changes for stack trace fix

Checklist:

• Owner:

• JIRA_ID as part of branch/PR name

• Rebase the branch with upstream

• Squashed all commits into a single commit

• Added Tests

• Reviewer:

• Reviewed Tests

• Added to Release Wiki/Jira

[Copilot]

Pull request overview

This PR cherry-picks dependency/test changes intended to support generating stack traces by ensuring gdb (and its Python scripting support) is available in the built MarkLogic Docker images.

Changes:

• Extend container structure tests to assert gdb and python3 exist and are runnable.
• Adjust the rootless server image’s “remove optional packages” step to avoid removing Python-related packages.
• Add gdb/python3 and related runtime dependencies to the UBI8/UBI9 dependency base images.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
test/structure-test.yaml	Adds file/command assertions for gdb and python3.
dockerFiles/marklogic-server-ubi-rootless:base	Stops removing Python-related packages so stack-trace tooling can remain present.
dockerFiles/marklogic-deps-ubi:base	Expands base dependency install list to include gdb, python3, and supporting packages (UBI8).
dockerFiles/marklogic-deps-ubi9:base	Expands base dependency install list to include gdb, python3, and supporting packages (UBI9).