Add mission tests

[1Blademaster]

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[Copilot]

Pull Request Overview

This PR adds comprehensive mission testing functionality with new test files, fixtures, and test data. The changes focus on testing mission upload/download functionality for different mission types (mission, fence, rally) and improving test reliability by using file-based test data instead of hardcoded values.

• Adds a new upload_default_mission pytest fixture to set up test data
• Replaces hardcoded test data with JSON files for better maintainability
• Adds comprehensive tests for individual mission type handling (mission, fence, rally)
• Includes a new MissionController unit test file with tests for private methods

Reviewed Changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
radio/tests/test_mission.py	Refactored existing tests and added new tests for individual mission types with file-based test data
radio/tests/test_MissionController.py	Added unit tests for MissionController private methods
radio/tests/mission_test_files/upload_mission_helper.py	Added helper function for uploading missions during test setup
radio/tests/mission_test_files/*.json	Added JSON files containing expected test results and input data
radio/tests/mission_test_files/*.txt	Added mission files in QGC format for test setup
radio/app/controllers/missionController.py	Fixed mission upload logic to handle MISSION_ACK messages properly
gcs/src/components/missions/missionStatistics.jsx	Added optional chaining to prevent undefined access errors

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