[BUG]SecurityInsight: `ThreatIntelligenceIndicator_Get` returns inconsistent response

### API Spec link

https://github.com/Azure/azure-rest-api-specs/blob/265f1bbcb042c0fa85ece9f76ba744beb4bada0f/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2022-10-01-preview/ThreatIntelligence.json#L156

### API Spec version

2022-10-01

### Describe the bug

After an indicator created by [`ThreatIntelligenceIndicator_Create`](https://github.com/Azure/azure-rest-api-specs/blob/265f1bbcb042c0fa85ece9f76ba744beb4bada0f/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2022-10-01-preview/ThreatIntelligence.json#L199), the [`ThreatIntelligenceIndicator_Get`](https://github.com/Azure/azure-rest-api-specs/blob/265f1bbcb042c0fa85ece9f76ba744beb4bada0f/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2022-10-01-preview/ThreatIntelligence.json#L156) may return HTTP 404 in a period.

### Expected behavior

The GET request returns actual resource after the creation request finishes.

### Actual behavior

The GET request was returned HTTP 404

### Reproduction Steps

1. call the create API to create a new indicator
2. cal the GET API once the creation call finishes.

### Environment

_No response_

Start with the linked ThreatIntelligence.json specification at the Create and Get operation definitions. Reproduce the sequence described by creating an indicator and immediately requesting it, then compare the documented responses and operation behavior. Done means the specification or related issue captures a verified, consistent outcome for the post-create GET request.

Written by the indexing model from the issue text.