fix(IT Wallet): [SIW-3094] Fix IPZS privacy webview's viewport height

[mastro993]

Short description

This PR introduces a change for reliably retrieving the full content height of a webpage inside a webview.

List of changes proposed in this pull request

• Updated GET_CONTENT_HEIGHT_SCRIPT content replacing document.body.scrollHeight with document.documentElement.offsetHeight

How to test

Using devices with different OS and screen sizes, verify that the IPZS privacy content is correctly shown in the WebView within the eID issuance flow

[github-actions]

PR Title Validation for conventional commit type

✅ All good! PR title follows the conventional commit type.

[github-actions]

Jira Pull Request Link

This Pull Request refers to Jira issues:

• SIW-3094

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.60%. Comparing base (5805e08) to head (9845f3a).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7417   +/-   ##
=======================================
  Coverage   59.60%   59.60%           
=======================================
  Files        1830     1830           
  Lines       39525    39525           
  Branches     9119     9117    -2     
=======================================
  Hits        23559    23559           
- Misses      15885    15897   +12     
+ Partials       81       69   -12     

Files with missing lines	Coverage Δ
ts/utils/webview.ts	90.00% <ø> (ø)

... and 12 files with indirect coverage changes

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[gispada]

LGTM.
I tested on two Android devices. I'd wait for further testing on iOS.

[ale-mazz]

The first time I entered the screen, the text was cut off before paragraph 9. Then I tried again, and it didn't happen anymore.

Tested on iPhone 13 Mini.