sidebar/notifs: normalise non expanded height

Also wrap summary when expanded

modules/sidebar/Notif.qml

@@ -13,7 +13,7 @@ StyledRect {
     required property Props props
     required property bool expanded
 
-    readonly property real nonAnimHeight: expanded ? summary.implicitHeight + expandedContent.implicitHeight + expandedContent.anchors.topMargin + Appearance.padding.normal * 2 : summary.implicitHeight
+    readonly property real nonAnimHeight: expanded ? summary.implicitHeight + expandedContent.implicitHeight + expandedContent.anchors.topMargin + Appearance.padding.normal * 2 : summaryHeightMetrics.height
 
     implicitHeight: nonAnimHeight
 
@@ -34,15 +34,23 @@ StyledRect {
             timeStr.anchors.margins: Appearance.padding.normal
             expandedContent.anchors.margins: Appearance.padding.normal
             summary.width: root.width - Appearance.padding.normal * 2 - timeStr.implicitWidth - Appearance.spacing.small
+            summary.maximumLineCount: Number.MAX_SAFE_INTEGER
         }
     }
 
     transitions: Transition {
         Anim {
-            properties: "margins,width"
+            properties: "margins,width,maximumLineCount"
         }
     }
 
+    TextMetrics {
+        id: summaryHeightMetrics
+
+        font: summary.font
+        text: " " // Use this height to prevent weird characters from changing the line height
+    }
+
     StyledText {
         id: summary
 
@@ -53,6 +61,8 @@ StyledRect {
         text: root.modelData.summary
         color: root.modelData.urgency === "critical" ? Colours.palette.m3onSecondaryContainer : Colours.palette.m3onSurface
         elide: Text.ElideRight
+        wrapMode: Text.WordWrap
+        maximumLineCount: 1
     }
 
     StyledText {