chore(catalog): fix text field icon usage for SSR

Fixes #5723

These examples were missing their SSR attributes for slotted content.

PiperOrigin-RevId: 678364136

Author: asyncLiz

docs/components/figures/textfield/usage-icons.html

@@ -3,16 +3,16 @@
     aria-label="Three outlined textfields next to each other the first has a search icon at the start the label Search Messages, the second a label that says Password and an eye icon toggle button at the end, and a red, visually errored outlined textfield with the label Username with an exclamation icon at the end and helper error text under the field that says Username not available"
     style="padding-block: 16px; gap: 16px"
   >
-    <md-outlined-text-field placeholder="Search for messages">
+    <md-outlined-text-field placeholder="Search for messages" has-leading-icon>
       <md-icon slot="leading-icon">search</md-icon>
     </md-outlined-text-field>
-    <md-outlined-text-field label="Password" type="password">
+    <md-outlined-text-field label="Password" type="password" has-trailing-icon>
       <md-icon-button toggle slot="trailing-icon">
         <md-icon>visibility</md-icon>
         <md-icon slot="selected">visibility_off</md-icon>
       </md-icon-button>
     </md-outlined-text-field>
-    <md-outlined-text-field label="Username" error error-text="Username not available">
+    <md-outlined-text-field label="Username" error error-text="Username not available" has-trailing-icon>
       <md-icon slot="trailing-icon">error</md-icon>
     </md-outlined-text-field>
   </figure>