[api-extractor] Comments of type properties are not extracted

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Summary

Comments of type properties are not extracted.

Repro steps

• Add comments to properties
• Extract api.json

Expected result: Comments of type properties are extracted to the json file

Actual result: Comments of type properties are not extracted

Details

Standard questions

Please answer these questions to help us investigate your issue more quickly:

Question	Answer
@microsoft/api-extractor version?	7.47.11
Operating system?	Windows
API Extractor scenario?	docs (.api.json)
Would you consider contributing a PR?	Yes