fix(ThreadManager): add members and conditionally include hasMore

[Jiralite]

Please describe the changes this PR makes and why it should be merged:

• Fetching active threads in a guild does not yield the has_more property.¹
• has_more does not appear to be marked as missing or potentially null.²³⁴
• members was not returned when fetching active threads in a guild.
• The permission requirement to fetch active threads in the guild did not seem to be true. Discord's API documentation does not state this,¹ but does for other thread-fetching methods.²³⁴

Status and versioning classification:

• Code changes have been tested against the Discord API, or there are no code changes
• I know how to update typings and have done so, or typings don't need updating

Footnotes

1. https://discord.com/developers/docs/resources/guild#list-active-guild-threads ↩ ↩²

2. https://discord.com/developers/docs/resources/channel#list-public-archived-threads ↩ ↩²

3. https://discord.com/developers/docs/resources/channel#list-private-archived-threads ↩ ↩²

4. https://discord.com/developers/docs/resources/channel#list-joined-private-archived-threads ↩ ↩²

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Name	Status	Preview	Comments	Updated
discord-js	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Mar 22, 2023 at 7:24PM (UTC)
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