[AvoidAdditionalProperties] Current implementation may be overly strict, or causing more noise than value

**Describe the bug**
False alert for AvoidAdditionalProperties.

**To Reproduce**
It marked the AdditionalProperties in our dictionary properties in the request body. Based on https://swagger.io/docs/specification/data-models/dictionaries/, additionalProperties is just part of the dictionary syntax, not the real property that named AdditionalProperties.

**Expected behavior**
It should not raise the flag for our additionalproperties that defined in our dictionary property

**Screenshots**
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**Desktop (please complete the following information):**
- OS: windows
- Browser: edge
- Version [e.g. 22]

**Additional context**
Add any other context about the problem here.