chore: update eslint-config-axkit to 1.1.0

[Jercik]

Summary

• Updates eslint-config-axkit from 1.0.0 to 1.1.0
• Fixes lint errors introduced by new ESLint rules in the updated config
• Updates test assertions to use recommended matchers (toThrowError, toHaveLength, expectTypeOf)
• Replaces this.constructor.name with explicit error class names to satisfy @typescript-eslint/no-this-alias rule

Test plan

• All existing tests pass
• ESLint passes with no violations
• No functional changes to application logic