[PM-20225] Prevent legacy users without userkey from logging in (#14267)

* Prevent legacy users without userkey from logging in

* Remove further web-migration code for legacy users

* Add i18n for legacy user error message

* Update comment

* Remove migrate legacy component

* Remove i18n messages

* Remove migrate legacy encryption reference

apps/web/src/locales/en/messages.json

@@ -4473,9 +4473,6 @@
       }
     }
   },
-  "encryptionKeyUpdateCannotProceed": {
-    "message": "Encryption key update cannot proceed"
-  },
   "editFieldLabel": {
     "message": "Edit $LABEL$",
     "placeholders": {
@@ -4528,24 +4525,15 @@
       }
     }
   },
-  "keyUpdateFoldersFailed": {
-    "message": "When updating your encryption key, your folders could not be decrypted. To continue with the update, your folders must be deleted. No vault items will be deleted if you proceed."
-  },
-  "keyUpdated": {
-    "message": "Key updated"
-  },
-  "updateEncryptionKey": {
-    "message": "Update encryption key"
-  },
-  "updateEncryptionSchemeDesc": {
-    "message": "We've changed the encryption scheme to provide better security. Update your encryption key now by entering your master password below."
-  },
   "updateEncryptionKeyWarning": {
     "message": "After updating your encryption key, you are required to log out and back in to all Bitwarden applications that you are currently using (such as the mobile app or browser extensions). Failure to log out and back in (which downloads your new encryption key) may result in data corruption. We will attempt to log you out automatically, however, it may be delayed."
   },
   "updateEncryptionKeyAccountExportWarning": {
     "message": "Any account restricted exports you have saved will become invalid."
   },
+  "legacyEncryptionUnsupported": {
+    "message": "Legacy encryption is no longer supported. Please contact support to recover your account."
+  },
   "subscription": {
     "message": "Subscription"
   },