ADFA-5405: Correct the stale swap comment on serveRequest

The call it described, discardCachesIfDatabaseChanged(), was deleted two commits
ago. The swap is applied by lookup()/withDatabase() inside the content source
now, so a request reaching neither does not poll for one -- the opposite of what
the comment led a reader to expect.

Author: davidschachterADFA

app/src/main/java/com/itsaky/androidide/localWebServer/WebServer.kt

@@ -534,7 +534,8 @@ class WebServer(
 			return sendError(writer, output, 501, "Not Implemented")
 		}
 
-		// serveRequest applies any pending sdcard debug-database swap via the content source.
+		// The content source applies a pending sdcard debug-database swap inside lookup()/withDatabase(),
+		// so a request reaching neither -- an unknown /pr/ target -- does not poll for one.
 		serveRequest(writer, output, path)
 	}