Failed to launch test with startDebugging call in CI despite debug is disabled

[michael-weng]

Describe the bug
In https://github.com/swiftlang/vscode-swift/pull/1159/files, build config was configure to not disable aslr.
See vadimcn/codelldb#196

However this is not the only entry that do startDebugging, this is also the case for the build commands. Instead of doing it in the code we should set seccomp:unconfined when running the docker container, which was how it was done before we move to GH action. All the docker files can probably be cleaned up too.

To Reproduce
Steps to reproduce the behavior:

1. Pick up this change Add integration tests for build commands #1185
2. Run GH actions and you should see failure below
3. https://github.com/swiftlang/vscode-swift/actions/runs/11669455153/job/32493069735?pr=1185

[michael-weng]

#1185
This is merged and passing in CI, which requires this change to work.
This issue is verified and can be closed.