fix: various swip21 fixes

[istae]

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Description

reserve: trigger eviction in the worker if the size is above capacity
agent: check if the node is frozen starting with the next block

Open API Spec Version Changes (if applicable)

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[istae]

it turns out that we check if a node is frozen by comparing the lastUpdatedBlockNumberOfAddress with the most recent block height here
which gets called by the agent here
as soon as the node start up, it updates the height in the staking contract which updates the lastUpdatedBlockNumberOfAddress with the current block, next this agent gets initialized, and since we are at the same block height, the IsOverlayFrozen check returns true bumping the block in this call by one should fix this issue