fix: Remove double padding on Snap home page (#26462)

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## **Description**

Fixes a newly introduced issue where the Snap home page would have
double padding since all Snap UI's are wrapped in `<Container>` as of
f461e37,
the container component adds 16px of padding by itself.

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ui/pages/snaps/snap-view/index.scss

@@ -27,7 +27,7 @@
 
   &__content {
     @include design-system.screen-sm-max {
-      padding: 0 16px 16px 16px;
+      padding-top: 0;
     }
 
     &__permissions {

ui/pages/snaps/snap-view/snap-view.js

@@ -109,6 +109,7 @@ function SnapView() {
           backgroundColor={BackgroundColor.backgroundDefault}
           className="snap-view__content"
           marginTop={4}
+          padding={showSettings ? 4 : 0}
         >
           {showSettings ? (
             <SnapSettings