fix(edit-content): hide sidebar shadow when collapsed

Apply the left-cast shadow only when the sidebar is not inert so it stops
bleeding into the body area while the sidebar is off-screen.

Author: oidacra

core-web/libs/edit-content/src/lib/components/dot-edit-content-sidebar/dot-edit-content-sidebar.component.ts

@@ -62,7 +62,7 @@ import { DotEditContentStore } from '../../store/edit-content.store';
     ],
     changeDetection: ChangeDetectionStrategy.OnPush,
     host: {
-        class: 'flex w-[21.875rem] h-full flex-col items-start border-l border-[var(--gray-400)] shadow-[-4px_0_12px_rgba(0,0,0,0.08)] relative min-w-0 overflow-x-hidden'
+        class: 'flex w-[21.875rem] h-full flex-col items-start border-l border-[var(--gray-400)] [&:not([inert])]:shadow-[-4px_0_12px_rgba(0,0,0,0.08)] relative min-w-0 overflow-x-hidden'
     }
 })
 export class DotEditContentSidebarComponent {