[CHIA-3391] Port test_nft*offers.py to be parametrized with R-CATs

[Quexington]

Another PR increasing R-CAT test coverage.

No production code changes as a result of this port.

There was one small change needed to the most complex test due to the different minting method resulting in a later exact change scenario which messed with a few of the balance calculations.

[coveralls-official]

Pull Request Test Coverage Report for Build 16342506293

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 44 of 44 (100.0%) changed or added relevant lines in 2 files are covered.
• 14 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+0.02%) to 91.393%

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Files with Coverage Reduction	New Missed Lines	%
chia/daemon/client.py	1	74.72%
chia/full_node/pending_tx_cache.py	1	96.55%
chia/wallet/wallet_node.py	1	87.45%
chia/server/node_discovery.py	2	82.11%
chia/_tests/core/util/test_lockfile.py	2	90.28%
chia/full_node/full_node.py	7	88.33%

Totals
Change from base Build 16332491766:	0.02%
Covered Lines:	102409
Relevant Lines:	111941

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💛 - Coveralls