Remove unnecessary and invalid settings

[schustmi]

Describe changes

This PR fixes a bug where invalid stack component settings keys were not ignored and stored in the DB. Additionally, no settings dictionary will now not be stored for stack components if the user did not specify any settings. Previously this always stored an empty dictionary.

Pre-requisites

Please ensure you have done the following:

• I have read the CONTRIBUTING.md document.
• I have added tests to cover my changes.
• I have based my new branch on develop and the open PR is targeting develop. If your branch wasn't based on develop read Contribution guide on rebasing branch to develop.
• IMPORTANT: I made sure that my changes are reflected properly in the following resources:
  • ZenML Docs
  • Dashboard: Needs to be communicated to the frontend team.
  • Templates: Might need adjustments (that are not reflected in the template tests) in case of non-breaking changes and deprecations.
  • Projects: Depending on the version dependencies, different projects might get affected.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Other (add details above)

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[github-actions]

ZenML CLI Performance Comparison (Threshold: 1.0s, Timeout: 60s, Slow: 5s)

❌ Failed Commands on Current Branch (feature/remove-unnecessary-and-invalid-settings)

• zenml stack list: Command failed on run 1 (exit code: 1)
• zenml pipeline list: Command failed on run 1 (exit code: 1)
• zenml model list: Command failed on run 1 (exit code: 1)

🚨 New Failures Introduced

The following commands fail on your branch but worked on the target branch:

• zenml stack list
• zenml pipeline list
• zenml model list

Performance Comparison

Command	develop Time (s)	feature/remove-unnecessary-and-invalid-settings Time (s)	Difference	Status
zenml --help	1.553345 ± 0.008246	1.554314 ± 0.005657	±0.000s	✓ No significant change
zenml model list	Not tested	Failed	N/A	❌ Broken in current branch
zenml pipeline list	Not tested	Failed	N/A	❌ Broken in current branch
zenml stack --help	1.544818 ± 0.007348	1.548500 ± 0.008062	+0.004s	✓ No significant change
zenml stack list	Not tested	Failed	N/A	❌ Broken in current branch

Summary

• Total commands analyzed: 5
• Commands compared for timing: 2
• Commands improved: 0 (0.0% of compared)
• Commands degraded: 0 (0.0% of compared)
• Commands unchanged: 2 (100.0% of compared)
• Failed commands: 3 (NEW FAILURES INTRODUCED)
• Timed out commands: 0
• Slow commands: 0

Environment Info

• Target branch: Linux 6.8.0-1021-azure
• Current branch: Linux 6.8.0-1021-azure
• Test timestamp: 2025-04-17T13:37:49Z
• Timeout: 60 seconds
• Slow threshold: 5 seconds