fixup! ♿️(frontend) improve participants toggle a11y label

src/frontend/src/locales/de/rooms.json

@@ -193,8 +193,8 @@
     "participants": {
       "open": "Alle ausblenden",
       "closed": "Alle anzeigen",
-      "count": "{{count}} Teilnehmer",
-      "count_plural": "{{count}} Teilnehmer"
+      "count_one": "{{count}} Teilnehmer",
+      "count_other": "{{count}} Teilnehmer"
     },
     "tools": {
       "open": "Weitere Tools ausblenden",

src/frontend/src/locales/en/rooms.json

@@ -193,8 +193,8 @@
     "participants": {
       "open": "Hide everyone",
       "closed": "See everyone",
-      "count": "{{count}} participant",
-      "count_plural": "{{count}} participants"
+      "count_one": "{{count}} participant",
+      "count_other": "{{count}} participants"
     },
     "tools": {
       "open": "Hide more tools",

src/frontend/src/locales/fr/rooms.json

@@ -193,8 +193,8 @@
     "participants": {
       "open": "Masquer les participants",
       "closed": "Afficher les participants",
-      "count": "{{count}} participant",
-      "count_plural": "{{count}} participants"
+      "count_one": "{{count}} participant",
+      "count_other": "{{count}} participants"
     },
     "tools": {
       "open": "Masquer les outils de réunion",

src/frontend/src/locales/nl/rooms.json

@@ -193,8 +193,8 @@
     "participants": {
       "open": "Verberg iedereen",
       "closed": "Toon iedereen",
-      "count": "{{count}} deelnemer",
-      "count_plural": "{{count}} deelnemers"
+      "count_one": "{{count}} deelnemer",
+      "count_other": "{{count}} deelnemers"
     },
     "tools": {
       "open": "Meer tools verbergen",