feat: add react-helmet to preferred manifest

[gameroman]

Closes #185

[joaopedrodcf]

How should we also tell that we can actually just use react without a module maybe this part is important for when it appears in npmx

[gameroman]

Not sure there is a way to do that at the moment

[43081j]

really there's two replacements, so this array isn't quite right.

the first replacement should probably be "react" i guess.

we can figure out nicer ways to present that and infer that it means "no dependency needed" in future

[gameroman]

I was thinking in future we could add something like :remove: or :upstreamed: which would that functionality exists in the package for which this is used or something like that

[43081j]

for now we can just add react.

since you are in fact replacing the thing you use with something the "react" module provides

[gameroman]

Makes sense