Move app icon composables outside of mutable Fragment class.

This way, the composables do not receive an implicit mutable parameter, which allows the compiler to mark them as skippable.

app/src/main/java/org/thoughtcrime/securesms/components/settings/app/appearance/appicon/AppIconSelectionFragment.kt

@@ -87,6 +87,15 @@ class AppIconSelectionFragment : ComposeFragment() {
     findNavController().safeNavigate(R.id.action_appIconSelectionFragment_to_appIconTutorialFragment)
   }
 
+  companion object {
+    val TAG = Log.tag(AppIconSelectionFragment::class.java)
+  }
+}
+
+private const val LEARN_MORE_TAG = "learn_more"
+private const val URL_TAG = "URL"
+private const val COLUMN_COUNT = 4
+
 /**
  * Screen allowing the user to view all the possible icon and select a new one to use.
  */
@@ -227,7 +236,7 @@ class AppIconSelectionFragment : ComposeFragment() {
 }
 
 /**
-   * Composable rendering the multiple layers of an adaptive icon onto one flattened rasterized Canvas.
+ * Composable rendering the icon and optionally a border, to indicate selection.
  */
 @Composable
 fun AppIcon(preset: AppIconPreset, isSelected: Boolean, onClick: () -> Unit, modifier: Modifier = Modifier) {
@@ -283,9 +292,7 @@ class AppIconSelectionFragment : ComposeFragment() {
   }
   ClickableText(
     text = annotatedText,
-      onClick = { _ ->
-        onClick()
-      },
+    onClick = { onClick() },
     style = MaterialTheme.typography.bodyMedium,
     modifier = modifier
   )
@@ -310,12 +317,3 @@ class AppIconSelectionFragment : ComposeFragment() {
     }
   }
 }
-
-  companion object {
-    val TAG = Log.tag(AppIconSelectionFragment::class.java)
-
-    private const val LEARN_MORE_TAG = "learn_more"
-    private const val URL_TAG = "URL"
-    private const val COLUMN_COUNT = 4
-  }
-}