wrap/elide: use Layout.fillWidth when possible

src/qml/Chat/Banners/Banner.qml

@@ -40,11 +40,7 @@ HRectangle {
             visible:
                 bannerRow.width - bannerAvatar.width - bannerButtons.width > 30
 
-            Layout.maximumWidth:
-                bannerRow.width -
-                bannerAvatar.width - bannerButtons.width -
-                Layout.leftMargin - Layout.rightMargin
-
+            Layout.fillWidth: true
             Layout.leftMargin: 5
             Layout.rightMargin: Layout.leftMargin
         }

src/qml/Chat/RoomSidePane/MemberDelegate.qml

@@ -38,7 +38,7 @@ HHighlightRectangle {
                     elide: Text.ElideRight
                     verticalAlignment: Qt.AlignVCenter
 
-                    Layout.maximumWidth: parent.width
+                    Layout.fillWidth: true
                 }
             }
         }