feat(css): add new css utility classes for display and flex utils (#30567)

Issue number: resolves #22469

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- Adds new responsive display classes with the following values: `none`, `inline`, `inline-block`, `block`, `flex`, `inline-flex`, `grid`, `inline-grid`, `table`, `table-cell`, `table-row`
- Adds new responsive flex util classes for the following properties: `align-content`, `align-items`, `align-self`, `justify-content`, `flex-direction`, `flex-wrap`, `flex`, `flex-grow` , `flex-shrink`, `order`
- Adds e2e tests to verify the correct classes are in the CSS files

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Co-authored-by: Brandy Smith <6577830+brandyscarney@users.noreply.github.com>

core/src/components/back-button/test/basic/index.html

@@ -125,7 +125,7 @@
 
         <ion-toolbar color="dark">
           <ion-buttons slot="start">
-            <ion-back-button class="ion-hide"></ion-back-button>
+            <ion-back-button class="ion-display-none"></ion-back-button>
           </ion-buttons>
           <ion-title>Hidden</ion-title>
         </ion-toolbar>

core/src/components/progress-bar/progress-bar.tsx

@@ -107,6 +107,7 @@ const renderProgress = (value: number, buffer: number) => {
      * When finalBuffer === 1, we use display: none
      * instead of removing the element to avoid flickering.
      */
+    // TODO(FW-6697): change `ion-hide` class to `ion-display-none` or another class
     <div
       class={{ 'buffer-circles-container': true, 'ion-hide': finalBuffer === 1 }}
       style={{ transform: `translateX(${finalBuffer * 100}%)` }}