[PM-15106] - add loading state to risk insights

[jaasen-livefront]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-15106

📔 Objective

This PR adds a loading state to the "All applications" and "Critical Applications" tabs in the risk insights page.

📸 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

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 33.43%. Comparing base (6b25515) to head (e52dca1). Report is 1 commits behind head on PM-13455.

:white_check_mark: All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...ess-intelligence/applications-loading.component.ts	0.00%	5 Missing :warning:
.../access-intelligence/all-applications.component.ts	0.00%	1 Missing :warning:
...ss-intelligence/critical-applications.component.ts	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## PM-13455 #12078 +/- ## ============================================ - Coverage 33.44% 33.43% -0.01% ============================================ Files 2848 2844 -4 Lines 89159 89097 -62 Branches 16992 16990 -2 ============================================ - Hits 29818 29790 -28 + Misses 57002 56969 -33 + Partials 2339 2338 -1 ```

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