Merge branch 'redmine-issues/19725' into 'develop'

REDMINE_ISSUE-19725 | Redirection vers la page de connexion du portail MRN si l'utilisateur n'est pas connecté

See merge request !841

src/views/AttachmentPreview.vue

 <template>
-  <div :class="['attachment-preview', { is_pdf }]">  
+  <div :class="['preview', { is_pdf }]">  
     <embed
       v-if="is_pdf"
       :src="src"
@@ -31,8 +31,8 @@ export default {
 };
 </script>
 
-<style lang="less">
-.attachment-preview {
+<style scoped lang="less">
+.preview {
   width: 100vw;
   &.is_pdf {
     padding: 0;