fix some icon rendering issues and improve style

Icons.qml

@@ -6,10 +6,11 @@ Text {
     font.family: "Material Symbols Rounded"
     property int grade: 20
     color: Colors.foreground
+    font.pixelSize: 14
     font.variableAxes: ({
             FILL: fill.toFixed(1),
             GRAD: grade,
             opsz: Settings.fontSize,
-            wght: 700
+            wght: 500
         })
 }

modules/bar/Volume.qml

@@ -17,7 +17,7 @@ Item {
             }
         }
     }
-    implicitWidth: styleLayout.implicitWidth + 10
+    width: styleLayout.implicitWidth + 10
     implicitHeight: 34
     property var sink: Pipewire.defaultAudioSink
     Process {
@@ -54,7 +54,7 @@ Item {
         anchors.centerIn: parent
         spacing: 0
         Row {
-            spacing: 10
+            spacing: 2
             Text {
                 PwObjectTracker {
                     objects: Pipewire.ready ? root.sink : []