Add Test Case 44: Share Calculator Results Table render & accessibility

[avarabyeu]

This PR adds an automated Cucumber/Playwright test for Test Case 44 (Results Table – Render and Accessibility).

Changes included:

• New feature file: features/share-calculator-results.feature
• New Page Object: src/pages/ShareCalculatorPage.ts
• New step definitions: src/steps/share-calculator-steps.ts

The test navigates to the Share Calculator, fills Shares and Date, submits the form, and verifies:

• An accessible results table is rendered dynamically without a page reload
• Loading indicator appears/disappears when present
• Table has headers and at least one result row
• URL does not change after submission

Notes/Assumptions:

• Selectors are defensive and may need tuning if the target page uses non-standard names for inputs/buttons.
• The test attempts to wait for network activity and loading indicators rather than relying on fixed sleeps.

Closes: none