Properly type Modal props to ensure useful typescript checking (#10238

* Properly type Modal props to ensure useful typescript checking

* delint

* Iterate

* Iterate

* Fix modal.close loop

* Iterate

* Fix tests

* Add comment

* Fix test

src/modules/ProxiedModuleApi.ts

@@ -88,7 +88,7 @@ export class ProxiedModuleApi implements ModuleApi {
                 },
                 "mx_CompoundDialog",
             ).finished.then(([didOkOrSubmit, model]) => {
-                resolve({ didOkOrSubmit, model });
+                resolve({ didOkOrSubmit, model: model as M });
             });
         });
     }