feat(forms): add local Form A presentation preview

www/src/components/ContactForm.astro

@@ -25,7 +25,8 @@ const mockResult = resolveMockFormResult(import.meta.env.PUBLIC_AIA_FORMS_MOCK_R
     <label>{text.email}<input type="email" name="email" autocomplete="email" disabled={mode === 'off'} /></label>
     <label>{text.phone}<input type="tel" name="phone" autocomplete="tel" disabled={mode === 'off'} /></label>
     <label>{text.service}<select name="service" disabled={mode === 'off'}>{text.options.map((label) => <option>{label}</option>)}</select></label>
-    <label>{text.message}<textarea name="message" rows="5" disabled={mode === 'off'}></textarea></label>
+    <label>{text.message}<textarea name="message" rows="5" aria-describedby="contact-sensitive-note" disabled={mode === 'off'}></textarea></label>
+    <p id="contact-sensitive-note" class="contact-form-card__caution" role="note">{text.formAPreview.caution}</p>
     <Button type="button" data-mock-submit disabled={mode === 'off'} aria-describedby="contact-form-note" class="contact-form-card__submit">{text.submit}</Button>
     <p id="contact-form-note" class="contact-form-card__note" data-form-status>{mode === 'mock' ? text.mock : <>{text.disabled} <ContactObfuscation phone="(480) 687-7099" hrefValue="+14806877099" obfuscatedText="9907-786 (084)" />.</>}</p>
   </div>
@@ -99,4 +100,11 @@ const mockResult = resolveMockFormResult(import.meta.env.PUBLIC_AIA_FORMS_MOCK_R
     margin: 0;
     text-align: center;
   }
+
+  .contact-form-card__caution {
+    color: var(--color-muted);
+    font-size: .85rem;
+    line-height: 1.65;
+    margin: -.25rem 0 0;
+  }
 </style>