Fix issue preventing PDF export of SIM protocol analysis reports

Corrected data handling in `generate_individual_sim_report` to support different usage data field names, resolving PDF export errors.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 2a8c6da9-9a06-4769-8be4-e1671215d43f
Replit-Commit-Checkpoint-Type: full_checkpoint
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