feat(ui): adjust line-height and spacing for multi-line text in details row

[jiwlee97]

Fixes #24018

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Description

The details row content had an issue where long text caused excessive line spacing due to a fixed line-height: 50px.
This made multi-line content (e.g., Description, Maintainers) appear visually inconsistent.

Changes

Override .white-box__details-row .columns.small-9 style:

• Changed line-height from fixed 50px to relative 1.4
• Added min-height: 50px to ensure baseline row height
• Applied padding-top/padding-bottom: 15px for consistent vertical spacing

after changes:

before changes:

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