fix(test): refine e2e accessiblity rules

e2e-tests/accessibility.spec.ts

@@ -8,6 +8,7 @@ test('should not have any automatically detectable accessibility issues', async
     await page.waitForTimeout(2000)
     const accessibilityScanResults = await new AxeBuilder({ page })
         .withTags(['wcag2a', 'wcag2aa', 'wcag21a', 'wcag21aa'])
+        .disableRules(['meta-viewport'])
         .setLegacyMode()
         .analyze()
 

src/main/frontend/components/right_sidebar.cljs

@@ -377,6 +377,7 @@
                 :aria-label (t :right-side-bar/separator)
                 :aria-valuemin (* min-ratio 100)
                 :aria-valuemax (* max-ratio 100)
+                :aria-valuenow 50
                 :tabIndex "0"
                 :data-expanded sidebar-open?}]))