Fixed mi_test1 and mi_test_all.sh

The mi_rsame() test in mi_test has been broken since MDEV-15458 in 2019.
Fixed same was as ma_test1 was fixed.

Author: montywi

storage/myisam/mi_test1.c

@@ -210,6 +210,11 @@ static int run_test(const char *filename)
     if (!silent)
       printf("- Updating rows\n");
 
+    create_key(key, j);
+    if ((mi_rkey(file, read_record, 0, key,
+                 HA_WHOLE_KEY, HA_READ_KEY_EXACT)))
+      printf("Can't find last written row with mi_rkey\n");
+
     /* Update first last row to force extend of file */
     if (mi_rsame(file,read_record,-1))
     {