Fix IntegerControlView styling

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Resources/Styles/MaterialGraph.uss

     flex-grow: 1;
 }
 
+IntegerControlView {
+    flex-direction: row;
+    padding-left: 8;
+    padding-right: 8;
+    padding-top: 4;
+    padding-bottom: 4;
+}
+
+IntegerControlView > IntegerField {
+    margin-left: 0;
+    margin-right: 0;
+    min-width: 30;
+    flex-grow: 1;
+}
+
 ObjectControlView {
     flex-direction: row;
 }