Fix runtime target status parsing for longbridge SG account

[Pigbibi]

What changed

• Make runtime target boolean parsing case/whitespace tolerant in strategy switch console worker and front-end.
• Treat any enabled/disabled config parse failure as enabled when initializing runtime target mode.
• Add regression tests for uppercase TRUE/FALSE values and worker parsing.

Why

• Longbridge SG account showed state in backend but rendered as in UI when values were returned as case-variant strings.

Validation

• node --test tests/test_cash_financing.js
• node --test tests/strategy_switch_worker_validation.mjs

[github-actions]

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