title: ngStyle not getting applied
body: <p>In my angular 5 app, [ngStyle] is not expanding to style attribute. I only see ng-reflect-ng-style.  This used to work before. Did something change in the recent updates to Angular or Angular-cli?</p>
  
  <p>This is template:</p>
  
  <pre><code>&lt;div *ngIf="ready" class="card" [ngStyle]="dimensions"&gt;
  &lt;/div
  </code></pre>
  
  <p>This is the generated HTML:</p>
  
  <pre><code>&lt;div _ngcontent-c6="" class="card ng-tns-c6-1" ng-reflect-ng-style="[object Object]"&gt;
  
  &lt;/div&gt;
  </code></pre>
  
  <p>Expected, with dimensions = {width: '240px'}:</p>
  
  <pre><code>&lt;div _ngcontent-c6="" class="card ng-tns-c6-1" ng-reflect-ng-style="[object Object]" style="width:240px"&gt;
  
  &lt;/div&gt;
  </code></pre>