FIX: Allow pasting invitees in invite modal (#12520)

Meta topic: https://meta.discourse.org/t/pasting-email-in-share-a-thread-box-stopped-working/180919?u=osama.

app/assets/javascripts/discourse/app/components/invite-panel.js

@@ -468,7 +468,11 @@ export default Component.extend({
 
   @action
   updateInvitee(selected, content) {
-    const invitee = content.findBy("id", selected[0]);
+    let invitee = content.findBy("id", selected[0]);
+    if (!invitee && content.length) {
+      invitee =
+        typeof content[0] === "string" ? { id: content[0] } : content[0];
+    }
     if (invitee) {
       this.setProperties({
         invitee: invitee.id.trim(),

app/assets/javascripts/discourse/app/templates/components/invite-panel.hbs

@@ -28,6 +28,7 @@
               excludeCurrentUser=true
               includeMessageableGroups=isPM
               filterPlaceholder=placeholderKey
+              fullWidthWrap=true
             )
           }}
         {{else}}

app/assets/stylesheets/common/components/share-and-invite-modal.scss

@@ -76,10 +76,6 @@
       margin-bottom: 8px;
     }
 
-    .invite-user-control input.email-or-username-input {
-      line-height: 1.75em;
-    }
-
     .group-access-control {
       .select-kit.multi-select input.filter-input {
         padding-left: 8px;
@@ -98,8 +94,16 @@
       color: var(--secondary-medium);
     }
 
-    .email-or-username-input {
+    .invite-user-input {
       width: 100%;
+
+      .input-wrapper {
+        width: 100%;
+
+        .filter-input {
+          width: 100%;
+        }
+      }
     }
 
     .max-redemptions-allowed {