Data node's OpenSearch upgrade UI - #26097
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laura-b-g
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As this PR was already tested I only did a code-review on the frontend. I have quite some remarks and it would be nice to get them fixed. For the comments on code comments, I have not commented on all comment lines that I think are only explaining code that should be self-explanatory, it would be good to have a look and remove those.
IMO, none of my remarks are blocking and as I am off the next two days I will already approve.
moesterheld
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Backend changes by @todvora lgtm, only added a few minor fixes myself
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Description
Data node's OpenSearch upgrade UI
Adds the frontend for upgrading the Data Nodes' embedded OpenSearch (e.g. 2.19 → 3.5) from the Data Node Upgrade page.
Motivation and Context
fixes https://github.com/Graylog2/graylog-plugin-enterprise/issues/14262
Screenshots (if appropriate):
Types of changes
Checklist: