[PM-16662] Fix annual pricing for billable providers

[jonashendrickx]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-16662

📔 Objective

• Fixed label showing 'year' instead of 'month', when the billing cadence was actually annually.
• Adjusted scopes for fields, methods & properties.

📸 Screenshots

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[github-actions]

Checkmarx One – Scan Summary & Details – db476179-316b-43d1-8157-6d4153ba2953

No New Or Fixed Issues Found

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.

Project coverage is 33.73%. Comparing base (196c1e1) to head (3c7abe0).

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...rs/subscription/provider-subscription.component.ts	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12657      +/-   ##
==========================================
- Coverage   33.74%   33.73%   -0.01%     
==========================================
  Files        2918     2918              
  Lines       90994    90998       +4     
  Branches    17200    17202       +2     
==========================================
- Hits        30703    30696       -7     
- Misses      57891    57902      +11     
  Partials     2400     2400              

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