Update RunService context test results table

[ari-party]

Changes

Table hasn't been updated for over a year. Some cells should've been blank (indicating that the method was unavailable/errored), but weren't.
This PR also adds the "Luau Execution" environment.

I used the following script to get the updated values:

local RunService = game:GetService("RunService")

function nilcall(func: () -> boolean)
	local success, result = pcall(func)
	return if success then result else nil
end

local result = {
	IsStudio = nilcall(function()
		return RunService:IsStudio()
	end),
	IsClient = nilcall(function()
		return RunService:IsClient()
	end),
	IsServer = nilcall(function()
		return RunService:IsServer()
	end),
	IsEdit = nilcall(function()
		return RunService:IsEdit()
	end),
	IsRunning = nilcall(function()
		return RunService:IsRunning()
	end),
	IsRunMode = nilcall(function()
		return RunService:IsRunMode()
	end),
}

-- print(result)
-- print(game:GetService("HttpService"):JSONEncode(result))
return result

And here is a markdown version of the table for easier reading:

Environment	IsStudio	IsClient	IsServer	IsEdit	IsRunning	IsRunMode
Live (Client)	false	true	false		true	false
Live (Server)	false	false	true		true	false
Edit	true	true	true	true	false	false
Collaborative Edit	true	true	false	true	false	false
Run Mode	true	true	true	true	false	false
Play Mode (Client)	true	true	false		true	false
Play Mode (Server)	true	false	true		true	false
Team Test (Client)	true	true	false		true	false
Team Test (Server)	false	false	true		true	false
Luau Execution	false	false	true		false	false

Though, for some reason, Team Test (Server) has false for IsStudio, perhaps confirm that this is intended before merging?

Might want to reconsider the ordering of the environments as well. Let me know!

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