fix: migrate test latency to locales

fe-app-podkop/src/podkop/tabs/dashboard/renderSections.ts

@@ -101,7 +101,7 @@ export function renderDefaultState({
           class: 'btn dashboard-sections-grid-item-test-latency',
           click: () => testLatency(),
         },
-        'Test latency',
+        _('Test latency'),
       ),
     ]),
     E(

luci-app-podkop/htdocs/luci-static/resources/view/podkop/main.js

@@ -1294,7 +1294,7 @@ function renderDefaultState({
           class: "btn dashboard-sections-grid-item-test-latency",
           click: () => testLatency()
         },
-        "Test latency"
+        _("Test latency")
       )
     ]),
     E(