fix: silent @typescript-eslint/no-redundant-type-constituents + fix local linting issues

[ccharly]

Partially reverting this PR:

• fix: remove @typescript-eslint/no-redundant-type-constituents directives #407

It turns out, the CI was happy with those changes, but it was giving us some other lint issues locally.

Still unsure what causes that (since it works fine on the CI). That seems to be a false-positive, and since this directive is not a "strong requirement" for increased type-safety, it's ok to disable it IMO.

---

Note

Streamlines linting and removes prior workarounds.

• Introduces tsCommonRules in .eslintrc.js to disable @typescript-eslint/no-redundant-type-constituents and applies it across multiple package overrides
• Removes extra @metamask/* path entries from jest.config.packages.js and tsconfig.packages.json used as a workaround
• Adds a scoped ESLint disable for duplicate type constituents in packages/keyring-internal-api/src/types.ts
• Refactors small test helpers in Ledger/Trezor keyring tests to use safer array access patterns

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