CHIA-2108 Cover computing transactions filter for transaction blocks with only reward coins

[AmineKhaldi]

Purpose:

Extend test_request_block_headers_transactions_filter to cover the case when a transaction block only contains reward coins.

Current Behavior:

This test only covers transaction blocks with spends (and reward coins).

New Behavior:

This test covers also transaction blocks with only reward coins.

[coveralls-official]

Pull Request Test Coverage Report for Build 12430410429

Details

• 11 of 11 (100.0%) changed or added relevant lines in 1 file are covered.
• 16 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+0.007%) to 91.518%

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Files with Coverage Reduction	New Missed Lines	%
chia/full_node/pending_tx_cache.py	1	96.55%
chia/full_node/full_node_api.py	1	84.67%
chia/farmer/farmer_api.py	2	94.38%
chia/timelord/timelord_launcher.py	2	90.71%
chia/server/node_discovery.py	3	81.28%
chia/full_node/full_node.py	7	86.27%

Totals
Change from base Build 12423040364:	0.007%
Covered Lines:	105246
Relevant Lines:	114819

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💛 - Coveralls