Prop 26: Increase stkATOM Instant Redemption fee from 0.5% to 1%

This proposal suggests increasing the IR fee from 0.5% to 1%. This proposal has already passed PSTAKE governance and needs XPRT governance approval to proceed with implementation.

Please see the corresponding PSTAKE governance proposal on Snapshot for full details: https://snapshot.org/#/pstakefinance.eth/proposal/0x07256799ce325a9e787042614d2b0e478fead55e8766a0b35c6190768a9762ba