Forwards account-wide issue page sizes

[eamodio]

Summary

• Honors requested page sizes for account-wide GitHub issue searches. Previously, each of the three aliased searches defaulted to 100 full issue nodes and could exceed GitHub's GraphQL complexity limit.
• Preserves the existing 100-item default when no size is supplied.
• Adds facade and GraphQL request regression coverage.

Validation

• pnpm --filter @gitlens/integrations run test
• pnpm --filter @gitlens/git-github run test
• pnpm run build
• pnpm exec oxfmt --check on all changed files

[augmentcode]

🤖 Augment PR Summary

Summary: This PR makes account-wide GitHub issue reads honor the facade's requested page size.

Changes:

• Adds pageSize to the account-wide issue-read options and forwards itemsPerPage through the integration facade.
• Passes that value from the GitHub integration into GitHubApi.searchMyIssues and its three aliased GraphQL searches.
• Preserves the existing 100-node-per-alias default when no page size is supplied.
• Adds integration and GraphQL-request regression coverage for the forwarding behavior.
• Documents the complexity-limit fix in the core changelog.

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[augmentcode]

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[gitkraken-services]

Rebase Successful

Skipped — PR is mergeable as-is, no push needed

Summary

Metric	Value
Status	Clean rebase — no conflicts
Target	main
Source	bug/core-github-issue-page-size

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Generated by Merge Mate at 2026-09-17 18:47:39 UTC