>Also the "Palestine" side of the warrants are against Hamas which also feels weird (Hamas is also not a signatory nation and many suggest that Hamas != Palestine).
The ICC prosecutes individuals not states, so there's no contradiction here.
>Given Palestine is a signatory does it mean they have to take action to extradite the Hamas leadership to face trial?
Yes
>What consequences do they face if they fail to do that?
There's no penalties built into the statute. It tends to have diplomatic blowback. See [1] for a prior example.
The ICC prosecutes individuals not states, so there's no contradiction here.
>Given Palestine is a signatory does it mean they have to take action to extradite the Hamas leadership to face trial?
Yes
>What consequences do they face if they fail to do that?
There's no penalties built into the statute. It tends to have diplomatic blowback. See [1] for a prior example.
[1]: https://press.un.org/en/2018/sc13623.doc.htm