test(query-core/query): retitle test to reflect actual coverage

The previous title ('fetch should start a new fetch when the previous
retryer has rejected') claimed coverage of the
`this.#retryer?.status() !== 'rejected'` branch in Query.fetch, but that
guard sits behind `state.fetchStatus !== 'idle'`. Once the prior fetch has
rejected and state.status becomes 'error', fetchStatus is already back to
'idle', so the first predicate short-circuits and the retryer.status()
check is never evaluated. Removing the rejected-retryer exception would
not flip this assertion.

Rename and trim to what the test actually exercises: a rejected fetch
followed by a successful refetch via Query.fetch. Per CodeRabbit review
on PR #10529.

Author: KimHyeongRae0

packages/query-core/src/__tests__/query.test.tsx

@@ -849,7 +849,7 @@ describe('query', () => {
     unsubscribe()
   })
 
-  it('fetch should start a new fetch when the previous retryer has rejected', async () => {
+  it('fetch should refetch successfully after the previous fetch errored', async () => {
     const key = queryKey()
 
     let shouldFail = true
@@ -860,19 +860,13 @@ describe('query', () => {
       return sleep(10).then(() => 'success')
     })
 
-    // Trigger a failing fetch so the query's retryer ends up rejected.
     queryClient.prefetchQuery({ queryKey: key, queryFn, retry: false })
     await vi.advanceTimersByTimeAsync(10)
 
     const query = queryCache.find<string>({ queryKey: key })!
     expect(queryFn).toHaveBeenCalledTimes(1)
     expect(query.state.status).toBe('error')
 
-    // Flip the queryFn to succeed and invoke fetch directly on the Query.
-    // The guard `this.#retryer?.status() !== 'rejected'` in Query.fetch must
-    // let execution fall through to create a fresh retryer — otherwise the
-    // call would early-return the previous (rejected) retryer's promise and
-    // queryFn would never run again.
     shouldFail = false
     const refetchPromise = query.fetch({ queryKey: key, queryFn, retry: false })
     await vi.advanceTimersByTimeAsync(10)