Reset intr var so test can progress

src/integration/test_suites/libs/sha256/sha256.c

@@ -64,7 +64,7 @@ void sha256_flow(sha256_io block, uint8_t mode, uint8_t wntz_mode, uint8_t wntz_
 
     // wait for SHA to be valid
     wait_for_sha256_intr();
-
+    cptra_intr_rcv.sha256_notif &= ~SHA256_REG_INTR_BLOCK_RF_NOTIF_INTERNAL_INTR_R_NOTIF_CMD_DONE_STS_MASK;
     reg_ptr = (uint32_t *) CLP_SHA256_REG_SHA256_DIGEST_0;
     printf("Load DIGEST data from SHA256\n");
     offset = 0;