fuzz: set up accdb in instr harness (#7413)

Author: mjain-jump

src/flamenco/runtime/tests/fd_instr_harness.c

@@ -335,6 +335,7 @@ fd_solfuzz_pb_instr_ctx_create( fd_solfuzz_runner_t *                runner,
 
   ctx->instr = info;
   ctx->runtime->progcache = runner->progcache;
+  ctx->runtime->accdb     = runner->accdb;
 
   runtime->log.enable_log_collector = 0;