feat(system error monitor): use polling subscriber

[masahiro-kubota]

Description

The same as #6997 based on the discussion, the polling subscriber is used in the system error monitor.

Tests performed

psim test were performed
Since there was no ROSbag file for the new topic type, I changed the topic type in the code and verified that the topic was output using the ROSbag file of the old topic type.

Effects on system behavior

Nothing but more efficient CPU usage

Interface changes

Pre-review checklist for the PR author

The PR author must check the checkboxes below when creating the PR.

• I've confirmed the contribution guidelines.
• The PR follows the pull request guidelines.

In-review checklist for the PR reviewers

The PR reviewers must check the checkboxes below before approval.

• The PR follows the pull request guidelines.

Post-review checklist for the PR author

The PR author must check the checkboxes below before merging.

• There are no open discussions or they are tracked via tickets.

After all checkboxes are checked, anyone who has write access can merge the PR.

[github-actions]

Thank you for contributing to the Autoware project!

🚧 If your pull request is in progress, switch it to draft mode.

Please ensure:

• You've checked our contribution guidelines.
• Your PR follows our pull request guidelines.
• All required CI checks pass before marking the PR ready for review.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 21 lines in your changes missing coverage. Please review.

Project coverage is 0.00%. Comparing base (3d849e9) to head (99cae11).
Report is 1257 commits behind head on main.

Files	Patch %	Lines
...em_error_monitor/src/system_error_monitor_core.cpp	0.00%	21 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #7736       +/-   ##
==========================================
- Coverage   15.09%   0.00%   -15.10%     
==========================================
  Files        1967      34     -1933     
  Lines      135941    2075   -133866     
  Branches    42122     136    -41986     
==========================================
- Hits        20520       0    -20520     
+ Misses      92700    2075    -90625     
+ Partials    22721       0    -22721     

Flag	Coverage Δ
differential	0.00% <0.00%> (?)
total	?

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.