Add generic type for kcContext.properties

src/login/kcContext/KcContext.ts

@@ -116,6 +116,7 @@ export declare namespace KcContext {
              */
             exists: (fieldName: string) => boolean;
         };
+        properties: Record<string, string | undefined>;
     };
 
     export type SamlPostForm = Common & {

src/login/kcContext/kcContextMocks.ts

@@ -236,7 +236,8 @@ export const kcContextCommonMock: KcContext.Common = {
         "attributes": {}
     },
     "scripts": [],
-    "isAppInitiatedAction": false
+    "isAppInitiatedAction": false,
+    "properties": {}
 };
 
 const loginUrl = {