Rebuild drawable on config change

Author: planarvoid

media-placeholders/src/main/java/org/wordpress/aztec/placeholders/PlaceholderManager.kt

@@ -322,7 +322,7 @@ class PlaceholderManager(
                     val end = aztecText.editableText.getSpanEnd(it)
                     val flags = aztecText.editableText.getSpanFlags(it)
                     aztecText.editableText.removeSpan(it)
-                    updateDrawableBounds(adapter, it.attributes, it.drawable)
+                    it.drawable = buildPlaceholderDrawable(adapter, it.attributes)
                     aztecText.editableText.setSpan(it, start, end, flags)
                     aztecText.refreshText(false)
                     insertInPosition(it.attributes, aztecText.editableText.getSpanStart(it))