Fix orphaned script_more_tests eval_script signature and wire module

[secsovereign]

Summary

• tests/unit/script_more_tests.rs was orphaned (not in tests/unit/mod.rs) and called the old 3-arg eval_script.
• Wire mod script_more_tests; and update call sites to eval_script(&script, &mut stack, 0, SigVersion::Base).
• Align fixtures/assertions with current consensus: op-limit uses OP_NOP (non-push opcodes count; OP_1 does not); stack overflow / large-script cases expect Err (or Ok(false)).
• Does not pull other orphaned unit modules into this PR. No PARTIAL_BASELINE bump, no merge/publish.

Test plan

• cargo fmt / cargo fmt --check
• CARGO_INCREMENTAL=0 cargo check (path patch aside → crates.io; restored after)
• cargo test --test unit_suite unit::script_more_tests:: → 3 passed (op-limit / stack-overflow / large-scripts)