fix(package/solid): Add missing stub method in a test

Author: vicary

packages/gqty/test/cache.test.ts

@@ -20,6 +20,7 @@ describe('Cache#dataAccessors', () => {
     subscribeSelect: () => () => {},
     dispose: () => {},
     subscribeDispose: () => () => {},
+    reset: () => {},
     notifyCacheUpdate: false,
     shouldFetch: false,
     hasCacheHit: false,
@@ -61,6 +62,7 @@ describe('Cache#data', () => {
     subscribeSelect: () => () => {},
     dispose: () => {},
     subscribeDispose: () => () => {},
+    reset: () => {},
     notifyCacheUpdate: false,
     shouldFetch: false,
     hasCacheHit: false,