Added more tests

[7maylord]

PR Summary: Enhanced Test Coverage for OrganizationContract

1. testDefaultAdvanceLimitOnDeployment
2. testRequestAdvanceWithMaxLimit
3. test_RevertWhen_RequestZeroAdvance
4. test_RevertWhen_NonRecipientRequestsAdvance
5. test_RevertWhen_RequestAdvanceAboveDefaultLimit
6. testRequestAdvanceEventEmission
7. test_RevertWhen_RequestAdvanceAboveDefaultLimit

Test Coverage Impact

• Improved coverage of advance request functionality
• Added validation of default advance limit behavior
• Enhanced event emission testing
• Strengthened edge case handling

Key Improvements

• Better validation of constructor-set default advance limit
• More comprehensive testing of advance request constraints
• Improved event emission verification
• Better handling of edge cases around advance limits