🚸(frontend) initialize the join input name with the persisted full name

Prefill the "name" field on the join screen with the full name
persisted in the database, instead of leaving it empty by default.

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to
 
 - 🗑️(settings) deprecate SUMMARY_SERVICE_VERSION=1
 - ⬆️(mail) update mjml to v5 and @html-to/text-cli
+- 🚸(frontend) initialize the join input name with the persisted full name
 
 ### Fixed
 

src/frontend/src/features/rooms/components/Join.tsx

@@ -118,7 +118,7 @@ export const Join = ({
   const { t } = useTranslation('rooms', { keyPrefix: 'join' })
 
   const { data: configData } = useConfig()
-  const { isLoggedIn } = useUser()
+  const { isLoggedIn, user } = useUser()
 
   const {
     audioEnabled,
@@ -461,7 +461,7 @@ export const Join = ({
                   onChange={saveUsername}
                   label={t('usernameLabel')}
                   id="input-name"
-                  defaultValue={username}
+                  defaultValue={username || user?.full_name}
                   validate={(value) => !value && t('errors.usernameEmpty')}
                   wrapperProps={{
                     noMargin: true,