Re-introduce expanded view notifications via snap_notify (#2881)

This PR reverses the revert that was made to previous `snap_notify`
changes that enabled an expanded view for snap notifications (see
#2706). Additional adjustments
were made for including the content type of the interface being created
in the `snap_notify` call. These changes are being introduced
post-introduction of interface persistence in the
`SnapInterfaceController` (see
#2856), which without, the
expanded view feature was broken.

packages/snaps-rpc-methods/jest.config.js

@@ -10,10 +10,10 @@ module.exports = deepmerge(baseConfig, {
   ],
   coverageThreshold: {
     global: {
-      branches: 92.88,
+      branches: 92.94,
       functions: 97.26,
-      lines: 97.84,
-      statements: 97.36,
+      lines: 97.87,
+      statements: 97.39,
     },
   },
 });