[timeboxed] frontend: fix static code analysis issues in shared components & data-pipelines

[DeltaMichael]

h3. Overview

When open-sourcing the @vdk/shared & @vdk/data-pipelines packages, static code analysis detected a number of issues.

• [https://app.codacy.com/gh/vmware/versatile-data-kit/pullRequest?prid=11125451&bid=33648268]
• [https://app.codacy.com/gh/vmware/versatile-data-kit/pullRequest?prid=11140466]
• [https://app.codacy.com/gh/vmware/versatile-data-kit/pullRequest?prid=11140581]

h3. DoD

1. Issues detected by SCA fixed