Cleanup test predicates on binary strings

[randombit]

No description provided.

[Copilot]

Pull request overview

This PR refactors the test framework to use more specific test predicates for binary string comparisons. It replaces generic test_eq and test_ne calls with test_bin_eq and test_bin_ne when comparing binary data (byte vectors, arrays, etc.).

Changes:

• Introduces test_bin_eq and test_bin_ne methods for binary data comparisons that accept std::span<const uint8_t> and hex strings
• Adds static assertions to test_is_eq to prevent misuse with binary/string/integral types
• Refactors implementation to use std::span instead of raw pointers
• Updates hundreds of test cases across the codebase to use the new predicates

Reviewed changes

Copilot reviewed 87 out of 87 changed files in this pull request and generated no comments.

File	Description
src/tests/tests.h	Added new test_bin_eq/test_bin_ne methods and static assertions to prevent misuse
src/tests/tests.cpp	Refactored implementation to use std::span, removed "producer" parameter
src/tests/unit_*.cpp	Updated test calls to use test_bin_eq for binary comparisons
src/tests/test_*.cpp	Updated test calls across all test files consistently

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[coveralls]

coverage: 90.056% (-0.003%) from 90.059%
when pulling e5a537a on jack/test-h-bin
into 76dfe61 on master.