Fix: Staled cache response used when system time adjusted backward (#8077)

* Fix: Staled cache response used when system time adjusted backward。
OkHttp would incorrectly use a cached response for a second request if the server's first response did not contain caching headers, if the system time was adjusted backward between the two requests。

* clamp each of the durations to be non-negative instead of doing that to the overall result

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Co-authored-by: luxinwei <[email protected]>

Author: luuillu

okhttp/src/jvmMain/kotlin/okhttp3/internal/cache/CacheStrategy.kt

@@ -272,8 +272,8 @@ class CacheStrategy internal constructor(
         apparentReceivedAge
       }
 
-      val responseDuration = receivedResponseMillis - sentRequestMillis
-      val residentDuration = nowMillis - receivedResponseMillis
+      val responseDuration = maxOf(0, receivedResponseMillis - sentRequestMillis)
+      val residentDuration = maxOf(0, nowMillis - receivedResponseMillis)
       return receivedAge + responseDuration + residentDuration
     }