Added limit-container-width to breadcrumbs container

This fixes an issue where the content has a limited width but the
breadcrumbs remained full width. Instead of creating a new variable
specifically for the breadcrumbs, it just re-uses @content_class

Closes #34573

app/views/layouts/nav/_breadcrumbs.html.haml

@@ -2,7 +2,7 @@
 - hide_top_links = @hide_top_links || false
 
 %nav.breadcrumbs{ role: "navigation" }
-  .breadcrumbs-container{ class: container_class }
+  .breadcrumbs-container{ class: [container_class, @content_class] }
     .breadcrumbs-links.js-title-container
       - unless hide_top_links
         .title

app/views/projects/commit/show.html.haml

 - @no_container = true
 - container_class = !fluid_layout && diff_view == :inline ? 'container-limited' : ''
 - limited_container_width = fluid_layout ? '' : 'limit-container-width'
+- @content_class = limited_container_width
 - page_title        "#{@commit.title} (#{@commit.short_id})", "Commits"
 - page_description  @commit.description
 = render "projects/commits/head"

app/views/projects/show.html.haml

 - @no_container = true
+- @content_class = "limit-container-width" unless fluid_layout
 - flash_message_container = show_new_nav? ? :new_global_flash : :flash_message
 
 = content_for :meta_tags do

app/views/projects/tree/show.html.haml

 - @no_container = true
+- @content_class = "limit-container-width" unless fluid_layout
 
 - page_title @path.presence || _("Files"), @ref
 = content_for :meta_tags do