Add aria-label

src/lib/components/impacts_view/test_cases_view/test_case_selected/graph/TestCaseGraph.svelte

@@ -1006,6 +1006,7 @@
                               >
                                 {#each getCustomizations(groupName, row.calculationName) as customization}
                                   <button
+                                    aria-label="personnaliser l'apparence"
                                     class="h-10 w-10 rounded border-2 border-neutral-300 hover:border-blue-500"
                                     onclick={() => {
                                       variableCustomizations[
@@ -1071,6 +1072,7 @@
                                   )
                                 ].selected = isSelected ? "false" : "true"
                                 updateVariableValuesAndCustomizations()
+                                console.log({ variableCustomizations })
                               }}
                             >
                               <div