Add ability to filter followed accounts' posts by language (#19095)

app/javascript/mastodon/locales/defaultMessages.json

@@ -1030,6 +1030,10 @@
         "defaultMessage": "Open moderation interface for @{name}",
         "id": "status.admin_account"
       },
+      {
+        "defaultMessage": "Change subscribed languages",
+        "id": "account.languages"
+      },
       {
         "defaultMessage": "Follows you",
         "id": "account.follows_you"
@@ -3350,6 +3354,27 @@
     ],
     "path": "app/javascript/mastodon/features/status/index.json"
   },
+  {
+    "descriptors": [
+      {
+        "defaultMessage": "Close",
+        "id": "lightbox.close"
+      },
+      {
+        "defaultMessage": "Change subscribed languages for {target}",
+        "id": "subscribed_languages.target"
+      },
+      {
+        "defaultMessage": "Only posts in selected languages will appear on your home and list timelines after the change. Select none to receive posts in all languages.",
+        "id": "subscribed_languages.lead"
+      },
+      {
+        "defaultMessage": "Save changes",
+        "id": "subscribed_languages.save"
+      }
+    ],
+    "path": "app/javascript/mastodon/features/subscribed_languages_modal/index.json"
+  },
   {
     "descriptors": [
       {

app/javascript/mastodon/locales/en.json

@@ -24,6 +24,7 @@
   "account.follows_you": "Follows you",
   "account.hide_reblogs": "Hide boosts from @{name}",
   "account.joined": "Joined {date}",
+  "account.languages": "Change subscribed languages",
   "account.link_verified_on": "Ownership of this link was checked on {date}",
   "account.locked_info": "This account privacy status is set to locked. The owner manually reviews who can follow them.",
   "account.media": "Media",
@@ -522,6 +523,9 @@
   "status.uncached_media_warning": "Not available",
   "status.unmute_conversation": "Unmute conversation",
   "status.unpin": "Unpin from profile",
+  "subscribed_languages.lead": "Only posts in selected languages will appear on your home and list timelines after the change. Select none to receive posts in all languages.",
+  "subscribed_languages.save": "Save changes",
+  "subscribed_languages.target": "Change subscribed languages for {target}",
   "suggestions.dismiss": "Dismiss suggestion",
   "suggestions.header": "You might be interested in…",
   "tabs_bar.federated_timeline": "Federated",