chore(mon-pix): use global page container layout on campaign code page

Author: Libouk

mon-pix/app/templates/fill-in-campaign-code.hbs

@@ -4,7 +4,7 @@
   <DataProtectionPolicyInformationBanner />
 </div>
 <Global::AppLayout>
-  <main id="main" class="main" role="main">
+  <main id="main" class="main global-page-container" role="main">
     <CampaignCodeForm
       @isUserAuthenticatedByPix={{this.isUserAuthenticatedByPix}}
       @isUserAuthenticatedByGAR={{this.isUserAuthenticatedByGAR}}