Add proper text size to LabelMedium.

app/src/main/res/values-v21/text_styles.xml

@@ -62,6 +62,7 @@
     </style>
 
     <style name="Signal.Text.LabelMedium" parent="TextAppearance.Material3.LabelMedium">
+        <item name="android:textSize">13sp</item>
         <item name="android:lineSpacingExtra">3sp</item>
         <item name="android:letterSpacing">0.0192</item>
     </style>

app/src/main/res/values-v28/text_styles.xml

@@ -59,6 +59,7 @@
     </style>
 
     <style name="Signal.Text.LabelMedium" parent="TextAppearance.Material3.LabelMedium">
+        <item name="android:textSize">13sp</item>
         <item name="android:lineHeight">16sp</item>
         <item name="android:letterSpacing">0.0192</item>
     </style>

app/src/main/res/values/text_styles.xml

@@ -50,6 +50,7 @@
     </style>
 
     <style name="Signal.Text.LabelMedium" parent="TextAppearance.Material3.LabelMedium">
+        <item name="android:textSize">13sp</item>
         <item name="android:lineSpacingExtra">3sp</item>
     </style>