01-tutorials - [Bug]

**In which component is this bug present?**

- [ ] 01-AgentCore-runtime
- [X] 02-AgentCore-gateway
- [ ] 03-AgentCore-identity
- [ ] 04-AgentCore-memory
- [ ] 05-AgentCore-tools
- [ ] 06-AgentCore-observability
- [ ] 07-AgentCore-E2E

If you are reporting multiple bugs, please create a separate issue for each. For documentation improvements, use the documentation improvement issue type.

**Bug Description**
A clear and concise description of the bug.
```
After a Gateway or Gateway Target is created, the resource is usually in a CREATING state. There's no utility in the repo to check for gateway & gateway target status before starting to use it.
```

**Screenshots**
If applicable, add screenshots to help explain your problem.
```
N/A
```