Fix stdin listeners on node:process namespace imports

[proggeramlug]

Summary

Fix literal process.stdin.on("data"/"end", ...) calls when process is a namespace import from node:process. The HIR lowering previously classified process.stdin.on as a native class method before reaching the process stream handler, so it registered no listeners.

Allow process stream properties through to the stream handler and recognize namespace/default imports there. Scope checks preserve calls on a locally shadowed process object.

Fixes #10914.

Testing

• Regression test fails on main with SHADOW undefined and EXIT 0 false 0 0.
• Regression test passes with the fix on a coherent compiler and static runtime build: SHADOW local, END 5 true, EXIT 0 true 5 true.
• cargo fmt --all -- --check
• git diff --check
• scripts/check_file_size.sh

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📥 Commits

Reviewing files that changed from the base of the PR and between c7cbc3c and 5e856ba.

📒 Files selected for processing (3)

• changelog.d/11001-process-namespace-stdin.md
• crates/perry-hir/src/lower/expr_call/module_class_static.rs
• crates/perry/tests/issue_10914_namespaced_process_stdin.rs

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[proggeramlug]

Landed on main in merge train 258 (#11078, v0.5.1641), main e27f0a068a.

Carried at head 5e856ba50f. CI on the train head was fully green — 22 jobs, zero failures, the first train since the public-baseline artifact was regenerated, so no known-red line to read past.

This train was bisect-verified: after an earlier 35-PR assembly hit five gap regressions, the lowering-touching PRs were split into probes, and this set (#11070) came back with all six gap shards clean while the other half reproduced all five.

Trains rebase-merge, so commits get new SHAs and GitHub cannot mark this merged. Closed as landed.