Fix insurance widget conflict with product details panel

[olance]

Reason for change

The insurance integration conflicts with PrestaShop's product details pane on product pages, and prevents its display.

Fixes ECOM-2155

Code changes

• Cleaned the JS global scope by moving all variables/functions into the self-executing function in alma-product-insurance.js
• Changed from JSON output into data attributes to JSON output into plain JavaScript objects in the global window.AlmaInsurance object
• Stopped trying to reload product details data from the DOM; using the data passed along the updatedProduct event by PrestaShop

How to test

As a reviewer, you are encouraged to test the PR locally.

• Load a product page for an insurance-eligible product
  👉 The insurance widget should be displayed
  👉 You should be able to switch from the product description to the product display panel
  👉 There should be no error in the console about dataset.product being null/undefined

Checklist for authors and reviewers

• The title of the PR uses business wording, not technical jargon, for the changelog readers to understand it
• The PR implements the changes asked in the referenced task / issue
• You understand the impact of this PR on existing code/features
• The changes include adequate logging and Datadog traces
• Documentation is updated (API, developer documentation, ADR, Notion...)

Non applicable

• The automated tests are compliant with the testing strategy
• The tests are relevant, and cover the corner/error cases, not only the happy path

[github-actions]

⏳E2E tests are currently running.
➡️ You can follow their progression here.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions]

❌ E2E tests have failed.
➡️ You can find the results here.