Removed internal scrollbar from right sidepanel

Generated a changelog entry

app/assets/stylesheets/framework/sidebar.scss

@@ -30,7 +30,6 @@
 
 .right-sidebar-collapsed {
   padding-right: 0;
-  width: fit-content;
 
   @include media-breakpoint-up(sm) {
     &:not(.wiki-sidebar):not(.build-sidebar):not(.issuable-bulk-update-sidebar) .content-wrapper {
@@ -83,8 +82,16 @@
   }
 }
 
+@mixin sidebar-container {
+  width: calc(100% + 100px);
+}
+
 .right-sidebar {
   border-left: 1px solid $border-color;
+
+  .sidebar-container {
+    @include sidebar-container;
+  }
 }
 
 .with-performance-bar .right-sidebar.affix {

app/assets/stylesheets/pages/builds.scss

@@ -176,7 +176,6 @@
   }
 
   .sidebar-container {
-    width: calc(100% + 100px);
     padding-right: 100px;
     height: 100%;
     overflow-y: scroll;

app/assets/stylesheets/pages/issuable.scss

@@ -309,7 +309,7 @@
   }
 
   .issuable-sidebar {
-    width: 100%;
+    @include sidebar-container;
     height: 100%;
     overflow-y: scroll;
     overflow-x: hidden;

app/assets/stylesheets/pages/wiki.scss

@@ -80,7 +80,6 @@
 
   .sidebar-container {
     padding: $gl-padding 0;
-    width: calc(100% + 100px);
     padding-right: 100px;
     height: 100%;
     overflow-y: scroll;

changelogs/unreleased/196226-rightsidebar-collapsed-always-on-scrollbar.yml

+---
+title: Fix right sidebar when scrollbars are always visible
+merge_request: 27314
+author: Shawn @CasualBot
+type: fixed