[PM-3197] "Pay with PayPal" button moves on screen after loading (#10083)

* hide duplicate iframe

* add comment

* Moved braintree styling to plugins.scss

* Moved next to other braintree-sheet

---------

Co-authored-by: Conner Turnbull <cturnbull@bitwarden.com>

apps/web/src/scss/plugins.scss

@@ -108,6 +108,13 @@
   border: none;
 }
 
+// hide duplicate paypal iframe
+.braintree-sheet__content--button
+  .braintree-sheet__button--paypal
+  iframe.zoid-prerender-frame.zoid-invisible {
+  display: none !important;
+}
+
 [data-braintree-id="upper-container"]::before {
   @include themify($themes) {
     background-color: themed("backgroundColor");