bug fix-offline nodes become online after saving config

[Kathircpe]

Fixes #26146

Testing done

Manually tested it and works.

Screenshots (UI changes only)

Before

After

Proposed changelog entries

• Fix offline nodes become online after save config

Proposed changelog category

/label bug

Proposed upgrade guidelines

N/A

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Desired reviewers

@mention

Before the changes are marked as ready-for-merge:

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[mawinter69]

This is definitely wrong.
I doubt that you have tested this properly.

[mawinter69]

This will not survive a Restart of Jenkins.

[mawinter69]

should be closed in favor of #26154

[krisstern]

should be closed in favor of #26154

Agreed