[PM-13757] Add policy component form validation to policy edit component

[BTreston]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-13757

📔 Objective

This PR resolves an issue where the Policy Edit component's form validation on the save button is not synced with the validation status of the Policy Component's form group.

📸 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 – 2f93ad6a-6502-4ae7-8851-df58e67bda46

No New Or Fixed Issues Found

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 33.47%. Comparing base (d13bbf9) to head (4dd6ef2).

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...le/organizations/policies/policy-edit.component.ts	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12150      +/-   ##
==========================================
- Coverage   33.47%   33.47%   -0.01%     
==========================================
  Files        2875     2875              
  Lines       89834    89835       +1     
  Branches    17103    17103              
==========================================
  Hits        30073    30073              
- Misses      57385    57386       +1     
  Partials     2376     2376              

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