DmesgPlugin update: MCE block ignore

[alexandraBara]

Summary

-Ignoring entire MCE block when mce_bank is specified by user through analyzer_args.

Test plan

• pytest test/unit
• pytest test/functional (if applicable)
• pre-commit run --all-files

Checklist

• Added/updated tests (or explained why not)
• Updated docs/README if behavior changed
• No secrets or credentials committed

Sample run cmd:

node-scraper run-plugins DmesgPlugin \
  --collection False \
  --analysis True \
  --data dmesg_mce.log \
  --mce-threshold 1 \
  --ignore-match-rules '{"mce_banks": ["60-63"]}'