refactor: fix Sonar type hints and nested contexts

[ReenigneArcher]

Description

Fixes sonar issues.

Screenshot

Issues Fixed or Closed

Roadmap Issues

Type of Change

• feat: New feature (non-breaking change which adds functionality)
• fix: Bug fix (non-breaking change which fixes an issue)
• docs: Documentation only changes
• style: Changes that do not affect the meaning of the code (white-space, formatting, missing semicolons, etc.)
• refactor: Code change that neither fixes a bug nor adds a feature
• perf: Code change that improves performance
• test: Adding missing tests or correcting existing tests
• build: Changes that affect the build system or external dependencies
• ci: Changes to CI configuration files and scripts
• chore: Other changes that don't modify src or test files
• revert: Reverts a previous commit
• BREAKING CHANGE: Introduces a breaking change (can be combined with any type above)

Checklist

• Code follows the style guidelines of this project
• Code has been self-reviewed
• Code has been commented, particularly in hard-to-understand areas
• Code docstring/documentation-blocks for new or existing methods/components have been added or updated
• Unit tests have been added or updated for any new or modified functionality

AI Usage

See our AI usage policy.

• None: No AI tools were used in creating this PR
• Light: AI provided minor assistance (formatting, simple suggestions)
• Moderate: AI helped with code generation or debugging specific parts
• Heavy: AI generated most or all of the code changes

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.94%. Comparing base (a837b88) to head (a3d77ff).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #625      +/-   ##
==========================================
- Coverage   76.00%   75.94%   -0.06%     
==========================================
  Files          26       26              
  Lines        2096     2091       -5     
==========================================
- Hits         1593     1588       -5     
  Misses        503      503              

Files with missing lines	Coverage Δ
src/common/database.py	95.29% <100.00%> (-0.02%)	⬇️
src/common/rank.py	58.57% <100.00%> (ø)
src/common/rank_database.py	96.77% <100.00%> (ø)
src/common/sponsors.py	100.00% <100.00%> (ø)
src/discord_bot/cogs/fun_commands.py	50.00% <100.00%> (-1.43%)	⬇️
src/discord_bot/cogs/moderator_commands.py	26.08% <ø> (-1.06%)	⬇️
src/discord_bot/cogs/rank.py	49.56% <ø> (-0.22%)	⬇️
src/discord_bot/cogs/support_commands.py	86.04% <100.00%> (-0.17%)	⬇️

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