[CHIA-3793] extend SIMPLE_GENERATOR flag

[arvidn]

Simple generators cannot make use of any arguments passed to them, so we're also banning block references. We also no longer need to pass the CLVM deserializer program as an argument after this soft-fork.

Don't pass the CLVM deserializer or any block references to simple generators. i.e. when the SIMPLE_GENERATOR flag is set. This is enabled when hard fork 2 activates.

[coveralls-official]

Pull Request Test Coverage Report for Build 19120126391

Details

• 15 of 15 (100.0%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.007%) to 84.635%

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Totals
Change from base Build 19099057450:	0.007%
Covered Lines:	17004
Relevant Lines:	20091

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