doc: clarify details of TSC public and private meetings

[jasnell]

Alternative to #58837

To be clear, I don't think any changes to our governance doc are needed, but others have proposed edits and additional requirements. This PR represents the version of those changes that I think would be better if any changes are made at all. See the discussion in #58837 for background.

[nodejs-github-bot]

Review requested:

• @nodejs/tsc

[mcollina]

lgtm

[joyeecheung]

Mostly LGTM, thanks. Still have a suggestion to align it with what we are already doing since that seems already good enough + a wording suggestion to make it more accurate.

[joyeecheung]

Suggested change

	For the private portion of the meeting, the TSC chair ensures that someone
	documents only the final disposition of any decisions made during the meeting
	and ensures that those are shared with all TSC members via a private discussion
	channel such as the TSC private email list. These summaries are not to be made
	public unless all TSC members present during the meeting agree.
	For the private portion of the meeting, the TSC chair ensures that someone
	produces a summary of the discussions, gets it reviewed by the attendees
	before the meeting ends, and shares it to all the TSC members once approved
	by the attendees via a private discussion channel such as the TSC private
	mailing list. The summary may be made public if there is consensus within the
	TSC to make it public.

I think this is closer to what we have already been doing e.g. the chair posts a quick draft of the summary to the Zoom chat, either written by themselves or someone just verbally draft it in the meeting for the chair to type, and ask for objections/feedback on the spot before the meeting ends to post it afterwards.

[jasnell]

Re: this part of the suggestion: "The summary may be made public if there is consensus within the TSC to make it public." ...This is not adequate, I think. The agreement needs to be among all the people who were in attendance, not just TSC members.

[joyeecheung]

Suggested change

	For the private portion of the meeting, the TSC chair ensures that someone
	documents only the final disposition of any decisions made during the meeting
	and ensures that those are shared with all TSC members via a private discussion
	channel such as the TSC private email list. These summaries are not to be made
	public unless all TSC members present during the meeting agree.
	For the private portion of the meeting, the TSC chair ensures that someone
	produces a summary of the discussions, gets it reviewed by the attendees
	before the meeting ends, and shares it to all the TSC members once approved
	by the attendees via a private discussion channel such as the TSC private
	mailing list. The summary may be made public if there is consensus within the
	TSC and the non-TSC attendees to make it public.

Oh right I forgot about the invited guest part. I think this should suffice (the original wording excluded TSC members not attending the meeting from the consensus of disclosure after they already see it, which seemed unintentional, at least not necessary IMO).

[ShogunPanda]

LGTM!