feat: implement file and text drop handling for chat and add shrunk sidebar override for window view

Modules/Sidebar/Chat/ChatState.qml

@@ -19,7 +19,7 @@ Singleton {
 	property bool settledSlim: false
 	property bool settledWide: false
 	property bool narrowSidebarExpanded: false
-	property bool windowIsWide: false
+	property bool shrinkSidebarOverride: false
 	property ShellScreen screen
 	property bool sidebarVisible: ShellState.forActive().sidebar
 
@@ -28,6 +28,9 @@ Singleton {
 		root.currentIdx = -1;
 	}
 
+	onIsWideChanged: if (isWide)
+		narrowSidebarExpanded = false
+
 	onSidebarVisibleChanged: if (!sidebarVisible)
 		fabExpanded = false
 }