Add a regression proving resolve_dispute cannot run while the protocol is paused or in maintenance mode

[Baskarayelu]

📋 Description

resolve_dispute in dispute.rs can move escrowed funds toward a party. The protocol has require_not_paused (pause.rs) and require_write_allowed (maintenance.rs) gates, but there is no focused regression asserting dispute resolution respects both.

Why this matters: pause and maintenance exist to freeze fund movement during incidents. If dispute resolution slips past those gates, an operator's emergency freeze is incomplete. This locks the gate coverage for the dispute path specifically.

🎯 Requirements & Context

• Add quicklendx-contracts/src/test_dispute_pause_maintenance.rs.
• Open a dispute, set paused, assert resolve_dispute rejects with the pause error; unpause and assert success.
• Repeat for maintenance mode via set_maintenance_mode.
• Assert read paths like get_dispute_details remain callable while paused (consistent with read-only access policy).

Context & constraints

• Use admin gating + token helpers consistent with test_dispute.rs.

🛠️ Suggested Execution

git checkout -b test/dispute-pause-maintenance
cargo test -p quicklendx-contracts test_dispute_pause_maintenance -- --nocapture
cargo clippy -p quicklendx-contracts --all-targets -- -D warnings

• Edge cases: paused AND maintenance both on; resolve succeeds after both cleared; reads unaffected.

Example commit message

test(disputes): assert resolve_dispute honors pause and maintenance gates

Locks that dispute fund movement is frozen during pause/maintenance while
reads stay available.

✅ Acceptance Criteria & Guidelines

Requirement	Target
Pause + maintenance both asserted	Required
Reads remain available	Required
Coverage of gated path	≥ 95%
cargo clippy clean	Required
Timeframe	96 hours from assignment

💬 Community & Support

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[brentthomas248]

Submitted PR: #1795

What changed:

• Added quicklendx-contracts/src/test_dispute_pause_maintenance.rs covering paused, maintenance-mode, and combined-gate resolve_dispute rejection.
• Verified get_dispute_details remains callable while writes are gated.
• Added the existing pause/maintenance guards to resolve_dispute before dispute state mutation.

Verification:

• RED check: removing the new guards made all 3 new tests fail because resolve_dispute returned Ok(()) while gated.
• cargo test -p quicklendx-contracts test_dispute_pause_maintenance -- --nocapture
• cargo clippy -p quicklendx-contracts --all-targets -- -D warnings
• git diff --check