Correction navigation après enregistrement issue

src/app/issues/issue-detail/issue-detail.html

@@ -3,11 +3,8 @@
     <h1>Detail de l'issue</h1>
     <p>Informations de creation et de suivi de l'issue.</p>
   </div>
-  <button type="button" class="edit-button" (click)="toggleEdit()">
-    {{ isEditing ? 'Fermer edition' : "Editer l'issue" }}
-  </button>
-  @if (isEditing) {
-    <button type="button" class="save-button" (click)="saveIssue()">Enregistrer</button>
+  @if (!isEditing) {
+    <button type="button" class="edit-button" (click)="startEdit()">Editer l'issue</button>
   }
 </header>
 
@@ -110,3 +107,11 @@
     </tbody>
   </table>
 </section>
+
+@if (isEditing) {
+  <div class="form-actions">
+    <button type="button" class="cancel-button" (click)="cancelEdit()">Annuler</button>
+    <button type="button" class="save-button" (click)="saveIssue()">Enregistrer</button>
+  </div>
+}
+