[Python APIView] Enum metaclass is not rendered in class definition

**Bad code snippet:**
```python
class azure.ai.projects.models.AzureAISearchQueryType(str, Enum):
```

**Description:**
The APIView parser is incorrectly rendering the Enum class definition without the required `metaclass=CaseInsensitiveEnumMeta`. This prevents case-insensitive string matching for enum values, which is required by guidelines.

**Expected (good) code snippet:**
```python
class azure.ai.projects.models.AzureAISearchQueryType(str, Enum, metaclass=CaseInsensitiveEnumMeta):
```

Please update the parser to correctly render the metaclass in Enum definitions.

Start by locating the APIView parser and its Python enum class-definition rendering path. Compare output for AzureAISearchQueryType with the expected metaclass form, then run the parser's relevant tests or fixture checks; done means the rendered definition includes CaseInsensitiveEnumMeta and preserves case-insensitive enum matching.

Written by the indexing model from the issue text.