Use stop icon from Compound.

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/icons/IconsList.kt

@@ -14,7 +14,6 @@ import io.element.android.libraries.designsystem.R
 // All the icons should be defined in Compound.
 internal val iconsOther = listOf(
     R.drawable.ic_notification,
-    R.drawable.ic_stop,
     R.drawable.pin,
     R.drawable.ic_winner,
 )

libraries/designsystem/src/main/res/drawable/ic_stop.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24">
-  <path
-      android:pathData="M6,16V8C6,7.45 6.196,6.979 6.588,6.588C6.979,6.196 7.45,6 8,6H16C16.55,6 17.021,6.196 17.413,6.588C17.804,6.979 18,7.45 18,8V16C18,16.55 17.804,17.021 17.413,17.413C17.021,17.804 16.55,18 16,18H8C7.45,18 6.979,17.804 6.588,17.413C6.196,17.021 6,16.55 6,16Z"
-      android:fillColor="#ffffff"/>
-</vector>

libraries/textcomposer/impl/src/main/kotlin/io/element/android/libraries/textcomposer/components/VoiceMessageRecorderButtonIcon.kt

@@ -65,7 +65,7 @@ private fun StopButton(
     ) {
         Icon(
             modifier = Modifier.size(24.dp),
-            resourceId = CommonDrawables.ic_stop,
+            imageVector = CompoundIcons.StopSolid(),
             // Note: accessibility is managed in TextComposer.
             contentDescription = null,
             tint = ElementTheme.colors.iconOnSolidPrimary,