Fix issue sticky header doesn't align left in fluid layout

What does this MR do and why?

closes #225172 (closed)

Screenshots or screen recordings

issue sticky header now has a limited width only in container with limit-container-width class

before:

after:

How to set up and validate locally

1. Set the layout mode to fluid in preferences setting.
2. Enter issue detail page.
3. Open the devtool in Chrome and adjust the screen width higher than 1920px

MR acceptance checklist

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