Issue Monster: eliminate false-positive 429 rate-limit detection

[Copilot]

Issue Monster was treating unrelated text as a 429 signal and prematurely skipping issue assignment. In practice, PR metadata like #41429 matched the old pattern and triggered the rate-limit guard incorrectly.

• Problem scope

  • Pre-activation rate-limit detection in issue-monster comment scanning was too broad.
  • Any substring containing 429 could be interpreted as a real HTTP 429 indicator.

• Change

  • Tightened the detection regex to require a standalone 429 token instead of arbitrary substring matches.
  • Applied the change in the workflow source and regenerated the compiled lock workflow.

• Behavioral impact

  • Keeps detection for actual rate-limit markers (429, rate limit, secondary rate limit, abuse detection, too many requests).
  • Stops false positives from numeric fragments in unrelated text (e.g., PR numbers).

// before
const rateLimitPattern = /rate limit|API rate limit|secondary rate limit|abuse detection|429|too many requests/i;

// after
const rateLimitPattern = /rate limit|API rate limit|secondary rate limit|abuse detection|\b429\b|too many requests/i;

[Copilot]

Pull request overview

This PR tightens Issue Monster’s rate-limit detection so it no longer treats arbitrary “429” substrings (e.g., PR numbers like #41429) as a real HTTP 429/rate-limit signal, preventing premature skipping of issue assignment.

Changes:

• Update issue-monster comment-scanning regex to require a standalone 429 token (\b429\b).
• Regenerate issue-monster.lock.yml to reflect the updated workflow source.
• Regenerate Copilot smoke lock workflows, including changing compiled strict-mode reporting to false.

Show a summary per file

File	Description
.github/workflows/smoke-copilot.lock.yml	Regenerated lock file; changes compiled strict-mode flag to false.
.github/workflows/smoke-copilot-aoai-entra.lock.yml	Regenerated lock file; changes compiled strict-mode flag to false.
.github/workflows/issue-monster.md	Tightens rate-limit regex to avoid false-positive 429 substring matches.
.github/workflows/issue-monster.lock.yml	Regenerated lock file to incorporate the updated Issue Monster regex.

Copilot's findings

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• Files reviewed: 4/4 changed files
• Comments generated: 2