Remove NFT unstaking limit

[NoahSaso]

The dao-voting-cw721-staked contract has a limit of 70 NFTs when unstaking. I believe the claim system could be rewritten to use pagination instead, which would remove the need for a limit like this. The limit is suboptimal and unintuitive since there's an unstaking duration, and a user should be able to access all of their NFTs after the configured unstaking duration.

dao-contracts/contracts/voting/dao-voting-cw721-staked/src/state.rs

Line 46 in 3518a28

pub const MAX_CLAIMS: u64 = 70;