[x] Make a way (constant or hook) to get the address of the migrate strategy by token address, which means YieldYakStrategy2 for sAvax and YieldYakAVAXStrategy2 for Avax (you can either get these by merging the addresses.json from v2 or by hard coding
[x] Only show the button if a targetStrategy is defined for that particular token (i.e. only sAvax & Avax right now)
YieldYakStrategy2for sAvax andYieldYakAVAXStrategy2for Avax (you can either get these by merging theaddresses.jsonfrom v2 or by hard coding