chore: upgrade Jest from v26 to v30

[ram-ui-dev]

Summary

Upgrades Jest from v26 to v30 to prepare for future dependency updates.

Changes

• Upgrade jest from ^26.6.0 to ^30.0.0
• Upgrade babel-jest from ^26.6.0 to ^30.0.0
• Upgrade @types/jest from ^26.0.14 to ^30.0.0
• Add jest-environment-jsdom ^30.0.0 (no longer bundled with Jest 27+)
• Update Jest config: testURL → testEnvironment + testEnvironmentOptions (Jest 28+ requirement)
• Update deprecated Jest matchers across all test files:
  • toBeCalledWith → toHaveBeenCalledWith
  • toBeCalled → toHaveBeenCalled
  • toBeCalledTimes → toHaveBeenCalledTimes
  • toThrowError → toThrow
• Update 75 snapshots for Jest 30 formatting changes

Testing

• ✅ All 607 tests passing (17 skipped)
• ✅ All 197 snapshots passing
• ✅ Lint and TypeScript checks passing