Fixes validation of pipelines that contain both pipeline params and default properties.

[rkpattnaik780]

What changes were proposed in this pull request?

Fixes validation of pipelines that contain both pipeline parameters and default properties.

Fixes #3190

How was this pull request tested?

Developer's Certificate of Origin 1.1

   By making a contribution to this project, I certify that:

   (a) The contribution was created in whole or in part by me and I
       have the right to submit it under the Apache License 2.0; or

   (b) The contribution is based upon previous work that, to the best
       of my knowledge, is covered under an appropriate open source
       license and I have the right under that license to submit that
       work with modifications, whether created in whole or in part
       by me, under the same open source license (unless I am
       permitted to submit under a different license), as indicated
       in the file; or

   (c) The contribution was provided directly to me by some other
       person who certified (a), (b) or (c) and I have not modified
       it.

   (d) I understand and agree that this project and the contribution
       are public and that a record of the contribution (including all
       personal information I submit with it, including my sign-off) is
       maintained indefinitely and may be redistributed consistent with
       this project or the open source license(s) involved.

[lresende]

Please update/fix the lint issues

[rkpattnaik780]

Please update/fix the lint issues

Done, the Test Server was failing for version 3.11, fix for which has been raised in #3197 .

[harshad16]

Thank you for this PR 💯
This works like a charm.

(app-root) (app-root) elyra-pipeline validate untitled.pipeline 

────────────────────────────────────────────────────────────────
 Elyra Pipeline Validation
────────────────────────────────────────────────────────────────

Validating pipeline...

❯ Pipeline validation SUCCEEDED.

[rkpattnaik780]

The PR has been rebased and updated to fix the linting issues. All checks are now passing.

Cc @lresende