chore: adding options to keep legacy behavior in export-dynamic script

[jesuino]

Description

This is a fix for RHIDP-2110 and RHIDP-2123

Related PR: janus-idp/backstage-plugins#1729

Please explain the changes you made here.

Adding the option --no-embed-as-dependencies for backend plugins and --in-place for frontend plugins.

Which issue(s) does this PR fix

• Fixes #?

PR acceptance criteria

Please make sure that the following steps are complete:

• GitHub Actions are completed and successful
• Unit Tests are updated and passing
• E2E Tests are updated and passing
• Documentation is updated if necessary (requirement for new features)
• Add a screenshot if the change is UX/UI related

How to test changes / Special notes to the reviewer

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
1.3% Duplication on New Code

See analysis details on SonarCloud

[github-actions]

The image is available at: quay.io/janus-idp/backstage-showcase:pr-1285!

[openshift-ci]

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This pull-request has been approved by: davidfestal

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