refactor: [IOBP-1096] Replace legacy markdown component for IDPay

[LeleDallas]

Short description

This pull request includes several changes to the idpay feature components, focusing on replacing the LegacyMarkdown component with the new IOMarkdown component.

List of changes proposed in this pull request

• Replaced LegacyMarkdown with IOMarkdown for displaying markdown content
• Removed OnboardingDescriptionMarkdown component in ts/features/idpay/onboarding/components/OnboardingDescriptionMarkdown.tsx as already done in chore(Cross):[IOAPPX-422] Replace the legacy markdown renderer with IOMarkdown #6445

How to test

Ensure that all legacy IDPay markdown components are aligned with the established design requirements

[github-actions]

Jira Pull Request Link

This Pull Request refers to the following Jira issue IOBP-1096

[Vangaorth]

Is not this a duplicate of #6445?

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 49.36%. Comparing base (40f6224) to head (17926f8).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...pay/onboarding/screens/InitiativeDetailsScreen.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6585      +/-   ##
==========================================
+ Coverage   49.34%   49.36%   +0.01%     
==========================================
  Files        1566     1566              
  Lines       32287    32274      -13     
  Branches     7288     7336      +48     
==========================================
- Hits        15932    15931       -1     
+ Misses      16316    16293      -23     
- Partials       39       50      +11     

Files with missing lines	Coverage Δ
...dpay/details/components/InitiativeRulesInfoBox.tsx	30.00% <ø> (ø)
...rding/components/OnboardingDescriptionMarkdown.tsx	33.33% <ø> (+19.04%)	⬆️
...pay/onboarding/screens/PDNDPrerequisitesScreen.tsx	9.52% <ø> (ø)
...pay/onboarding/screens/InitiativeDetailsScreen.tsx	10.00% <0.00%> (+0.90%)	⬆️

... and 11 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 40f6224...17926f8. Read the comment docs.

[LeleDallas]

Is not this a duplicate of #6445?

Yes, it's similar, but this one is listed in the B&P board as a refactor task for the IDPay screen

[Hantex9]

LGTM!