Update Altium exporter to support component-exempt keepouts

[imrishabh18]

tsci export -f altium still pins an exporter revision that aborts when a keepout has excluded_pcb_component_ids, including the ESP-12E/U2 keepout in fitness_watch.

Update circuit-json-to-altium from 5bdb7d2 to merged commit 1a50d0dd2c0737cf940d92c0315852dc0111dd87 from tscircuit/circuit-json-to-altium#146 and regenerate bun.lock. Keep the existing altiumts@0.0.59 override. Extend the Circuit JSON CLI export test with a component-exempt keepout and assert that the native clearance rule and component scope appear in the exported PCB.

Validation:

• Both Altium CLI tests pass, covering TSX export and Circuit JSON export to a custom ZIP path.
• bun run build passes.
• The built dist/cli/main.js successfully exports the published fitness_watch Circuit JSON.
• Changed-file formatting and git diff --check pass.

This adopts the merged exporter behavior; it does not establish Altium Designer DRC/routing semantics beyond the verification described in the upstream PR. Users receive the update after this change is merged and included in a CLI release.

[tscircuitbot]

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Impact: Minor

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