Ecies tweaks

[kajoseph]

Description

Cleans up ECIES implementation so it's not so smelly while we migrate to a better encryption scheme

Changelog

• Fixes some basic issues
• Lints
• Remove shortTag

Testing Notes

All tests should pass as normal

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Checklist

• I have read CONTRIBUTING.md and verified that this PR follows the guidelines and requirements outlined in it.

[Copilot]

Pull request overview

This PR refactors the bitcore-tss ECIES implementation to reduce “smell” during the migration to a new encryption scheme, while also tightening linting/formatting and updating related build/test configuration.

Changes:

• Refactors ECIES key derivation and authentication (HKDF-based KDF, MAC includes IV), removes shortTag support, and updates ECIES test vectors accordingly.
• Adds lint/fix scripts and enables ESLint rules for packages/bitcore-tss/**/*.js; applies formatting/lint cleanups across test/config files.
• Updates @bitgo/sdk-lib-mpc dependency (and lockfile), plus small webpack/wdio config adjustments.

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
packages/bitcore-tss/webpack.config.js	Minor cleanup in module replacement regex and require ordering.
packages/bitcore-tss/wdio.conf.js	Formatting/indentation normalization; no intended runtime behavior change.
packages/bitcore-tss/test/ecies.test.js	Updates ECIES vectors and removes shortTag test coverage.
packages/bitcore-tss/test/ecdsa.test.js	Minor lint fixes (missing semicolons / object literal).
packages/bitcore-tss/test/data/vectors.ecdsa.js	String/style normalization in test vectors.
packages/bitcore-tss/package.json	Adds lint/fix scripts and bumps @bitgo/sdk-lib-mpc.
packages/bitcore-tss/package-lock.json	Lockfile updates for the bumped dependency and new transitive deps.
packages/bitcore-tss/index.js	Semicolon/style fix.
packages/bitcore-tss/ecies/ecies.js	Core ECIES refactor: HKDF KDF, MAC changes, removes shortTag option handling, timing-safe compare.
packages/bitcore-tss/ecdsa/sign.js	Require ordering tweak.
packages/bitcore-tss/ecdsa/keygen.js	Require ordering tweak.
eslint.config.mjs	Adds bitcore-tss to CommonJS ESLint config scope.

Files not reviewed (1)

• packages/bitcore-tss/package-lock.json: Generated file

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