fix: [PE-937] a11y on CgnCard expiry date

[Hantex9]

Short description

This PR fixes the a11y text on the expiry date of the CgnCard component, replacing it with more accessible text that contains the full month and full year.

List of changes proposed in this pull request

• Formatted the accessibilityLabel with the full month and full year in order to be more accessible.

How to test

Inside the wallet home screen, open the SR on your device and check that the CGN validity is more accessible with full month and full year as values.

[github-actions]

Jira Pull Request Link

This Pull Request refers to Jira issues:

• PE-937

[github-actions]

PR Title Validation for conventional commit type

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

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 50.11%. Comparing base (4359b93) to head (f086476).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
ts/features/bonus/cgn/components/CgnCard.tsx	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6726   +/-   ##
=======================================
  Coverage   50.11%   50.11%           
=======================================
  Files        1557     1557           
  Lines       32468    32471    +3     
  Branches     7356     7359    +3     
=======================================
+ Hits        16272    16274    +2     
- Misses      16144    16158   +14     
+ Partials       52       39   -13     

Files with missing lines	Coverage Δ
ts/features/bonus/cgn/components/CgnCard.tsx	86.66% <66.66%> (-5.00%)	⬇️

... and 13 files with indirect coverage changes

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