IOContext not properly set for `stdout`

stdoutcontext.jl

### A Pluto.jl notebook ###
# v0.19.39

using Markdown
using InteractiveUtils

# ╔═╡ b44a82d6-d0ff-11ee-11ec-e971f708eafd
get(stdout, :color, false)

# ╔═╡ 714735da-c4dd-4968-b7af-e007701cd48f
printstyled("hello"; color=:red)

# ╔═╡ b98f3ba1-bad7-4ba6-a71b-afa960534c5f
printstyled(IOContext(stdout, :color => true), "hello"; color=:red)

# ╔═╡ Cell order:
# ╠═b44a82d6-d0ff-11ee-11ec-e971f708eafd
# ╠═714735da-c4dd-4968-b7af-e007701cd48f
# ╠═b98f3ba1-bad7-4ba6-a71b-afa960534c5f