chore: Update ESLint config packages to v15

[Gudahtt]

Explanation

Update all ESLint config packages from v14.x to v15. These updates introduce some helpful new rules, and loosen/disable a few rules that were causing us problems.

Details here: MetaMask/eslint-config#431

Most of the changes are due to the newly introduced import-x/consistent-type-specifier-style rule. The majority of the changes were from running yarn lint:fix, but I did make one commit to consolidate some duplicate import lines that the auto-fixer added.

References

N/A

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them

---

Note

Bumps ESLint config packages to v15 and updates imports across the repo to the new import type { ... } style, with minor ESLint rule tweaks (jsdoc) and lockfile updates.

• Tooling/Config:
  • Upgrade @metamask/eslint-config* packages to v15 in package.json and yarn.lock.
  • Tweak eslint.config.mjs: keep jsdoc/require-jsdoc and related jsdoc rules disabled; update comments.
• Codebase-wide refactor (lint autofix):
  • Conform to import-x/consistent-type-specifier-style: switch to import type { ... } for type-only imports; separate value vs type imports across packages.
  • Minor import consolidations/reorders in tests and sources.
• No functional changes: Only lint-driven import/style updates.

^{Written by Cursor Bugbot for commit 735caaf. This will update automatically on new commits. Configure here.}

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​metamask/​eslint-config-jest@​14.1.0 ⏵ 15.0.0	+1		+1	+4
	@​metamask/​eslint-config@​14.1.0 ⏵ 15.0.0	+1		+1	+4
	@​metamask/​eslint-config-nodejs@​14.0.0 ⏵ 15.0.0	+1			+8
	@​metamask/​eslint-config-typescript@​14.1.0 ⏵ 15.0.0			+1	+4

View full report

[mcmire]

LGTM!