chore: update Android gradle and Unity USS styles

Author: fadi-george

examples/demo/Assets/Plugins/Android/mainTemplate.gradle

@@ -14,7 +14,7 @@ dependencies {
 
 // Android Resolver Exclusions Start
 android {
-  packagingOptions {
+  packaging {
       exclude ('/lib/armeabi/*' + '*')
       exclude ('/lib/armeabi-v7a/*' + '*')
       exclude ('/lib/mips/*' + '*')

examples/demo/Assets/Resources/Theme.uss

@@ -533,10 +533,6 @@
     margin-bottom: 0;
 }
 
-.dialog-row .input-field:last-child {
-    margin-right: 0;
-}
-
 .dialog-row-delete {
     width: 32px;
     height: 32px;
@@ -633,7 +629,7 @@
     flex-shrink: 0 !important;
     width: auto !important;
     min-width: 0 !important;
-    text-align: left !important;
+    -unity-text-align: middle-left !important;
     margin-left: 8px;
     margin-right: 0 !important;
 }