Run test workflows on all branch PRs

[rhoerr]

Description (*)

This PR changes the following workflows to run on all PRs, not just to branch 2.4-develop:

• Coding Standard Baseline
• Unit Tests
• NX Integration Tests

Contribution checklist (*)

• [x] Pull request has a meaningful description of its purpose
• [x] All commits are accompanied by meaningful commit messages
• [x] All new or changed code is covered with unit/integration tests (if applicable)
• [x] README.md files for modified modules are updated and included in the pull request if any README.md predefined sections require an update
• [ ] All automated tests passed successfully (all builds are green)