docs: update images for neo session launcher

[ironAiken2]

This PR is about updating model-service section for 24.09

It's already up to date, so I just updated the reference links and images.

PDF[ko] : Appendix — Backend.AI Web-UI User Guide 24.03 문서.pdf
PDF[en] : Appendix — Backend.AI Web-UI User Guide 24.03 documentation.pdf

[ironAiken2]

• docs: update images and add 'classic session launcher' description #92
• docs: update images and add description of default session launcher #91
• docs: update images and add links to related page #87
• docs: update images and add 'resource policy setting in user modify modal` description #93
• docs: update images for neo session launcher #94 👈 (View in Graphite)
• docs: update vfolder images and descriptions #89
• docs: add session history feature, folder explorer and folder create modal descriptions #86
• docs: use folder explorer and create a new folder in session launcher #90
• main

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[YEONFEEL96]

Nothing changed in text, so I will approve this :)

[ironAiken2]

Merge activity

• Nov 22, 12:36 AM EST: A user started a stack merge that includes this pull request via Graphite.
• Nov 22, 12:45 AM EST: Graphite rebased this pull request as part of a merge.
• Nov 22, 12:46 AM EST: A user merged this pull request with Graphite.