Docs parser crashes when prop.tags is undefined

[THE-Amrit-mahto-05]

Prerequisites

• I have written a descriptive issue title
• I have searched existing issues to ensure the bug has not already been reported

Mongoose version

7.6.3

Node.js version

18.x

MongoDB server version

6.0.x

Typescript version (if applicable)

Not using TypeScript

Description

While working on Mongoose documentation generation, I found that the docs parser crashes when a property does not contain the tags array.

In docs/source/api.js, the loop assumes prop.tags always exists.
However, in some parsed doc blocks, prop.tags is undefined, which causes a runtime error:

TypeError: Cannot read properties of undefined (reading 'Symbol(Symbol.iterator)')

The crash happens before documentation pages finish building.

Steps to Reproduce

1. Clone the mongoose repository

2. Install dependencies: npm install

3. Run the docs build script: npm run docs:build

4. Build fails with:

   TypeError: Cannot read properties of undefined (reading 'Symbol(Symbol.iterator)')
   at docs/source/api.js:XXX

Expected Behavior

The docs parser should safely skip properties without tags instead of crashing.
Documentation generation should complete without errors.