Summary

• Follow-up to uninstall: make resilient to individual failures #21617 (uninstall resilience). Applies the same pattern to brew upgrade and brew reinstall: when some named arguments can't be resolved, the valid ones are still processed and unavailable names are reported via ofail at the end.
• For upgrade, guards against empty resolved lists accidentally triggering the "upgrade all outdated" path when names were given but all failed resolution.
• Adds per-cask error collection to Cask::Reinstall.reinstall_casks (matching the existing pattern in Cask::Upgrade.upgrade_casks! and Cask::Uninstall.uninstall_casks).

Test plan

• brew tests --only=cmd/upgrade — all pass
• brew tests --only=cmd/reinstall — all pass
• brew tests --only=cask/reinstall — all pass
• brew style --fix --changed — no offenses
• New integration test: brew upgrade valid_formula nonexistent upgrades the formula and exits non-zero
• New integration test: brew reinstall valid_formula nonexistent reinstalls the formula and exits non-zero
• New unit test: when one cask reinstall raises, remaining casks are still reinstalled

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