[CHIA-3795] change v1 plot phase-out

[arvidn]

to not affect required_iters which will change block infusion distribution in the slot and to be quantized to epoch blocksץ

The phase-out check is implemented in is_v1_phased_out().

The proof-of-space, when validated (as opposed to farmed) uses verify_and_get_quality_string(), which now needs to take the previous transaction block height, to check the phase-out.

When farming, we need to check the phase-out independently now. There are new calls to is_v1_phased_out() in harvester_api.py as well as block_tools.py.

calculate_iterations_quality() no longer needs to take sub slot iterators nor height, since it doesn't implement the phase-out anymore. The phase-out is now separate from computing quality.

[github-actions]

File	Coverage	Missing Lines
chia/full_node/full_node_api.py	71.4%	lines 900-901
chia/harvester/harvester_api.py	25.0%	lines 301, 304, 308
chia/simulator/block_tools.py	75.0%	lines 1594
chia/types/blockchain_format/proof_of_space.py	86.7%	lines 124-125

Total	Missing	Coverage
59 lines	8 lines	86%

[wjblanke]

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