Ajout d'un aria-label

src/lib/components/test_cases/TestCaseGraph.svelte

@@ -1059,6 +1059,7 @@
                             initialPlacement="top"
                           >
                             <button
+                              aria-label={isSelected ? "Cacher" : "Montrer"}
                               class="group h-full pl-0.5 pr-1"
                               onclick={() => {
                                 variableCustomizations[