AZ APIM show don't show all certificates

### **This is autogenerated. Please review and update as needed.**

## Describe the bug

Some certificates are not shown with AZ APIM show.

**Command Name**
`az apim show`

## To Reproduce:
Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

- _Put any pre-requisite steps here..._
- `az apim show --name {} --resource-group {}`

## Expected Behavior

It seems that only "root" category (named "CA certificates" in Azure portal) are shown.
Non "CA Certificate" are not displayed by the command.

In my case I added a certificate in a "Key Vault" but no ref to the KV entry can be found in AZ apim show result.

Certificates embedeed directly in APIM (I mean direct integration without using KV) are not shown either.

NB : It does not concern "custom host certificate" which is well present in result of AZ apim show.

## Environment Summary
```
Linux-5.10.102.1-microsoft-standard-WSL2-x86_64-with-glibc2.31, Ubuntu 20.04 LTS
Python 3.10.4
Installer: DEB

azure-cli 2.37.0
```
## Additional Context