Add tests that use the new input system

[nowsprinting]

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[Copilot]

Pull request overview

This pull request adds test support for Unity's new Input System by introducing a dedicated test scene and accompanying test case. The changes enable testing of UI interactions using the new Input System API alongside the existing input handling tests.

• Adds a comprehensive test scene (NewInputSystem.unity) with multiple test objects demonstrating various event handler patterns with the new Input System
• Introduces Input Actions configuration (TestInputActions.inputactions) with Player and UI action maps
• Adds a test case to verify click operations work correctly with the new Input System

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Tests/TestAssets/TestInputActions.inputactions	Defines Input Actions with Player and UI maps for keyboard, mouse, gamepad, touch, joystick, and XR control schemes
Tests/TestAssets/TestInputActions.inputactions.meta	Unity metadata for the Input Actions asset with InputSystem namespace configuration
Tests/TestAssets.meta	Unity metadata for the TestAssets directory
Tests/Scenes/NewInputSystem.unity	Unity scene containing test objects (UsingOnPointerClickHandler, DestroyItselfIfPointerDown, UsingPointerDownUpEventTrigger, UsingMultipleEventTriggers, UsingPointerClickEventTrigger, UsingOnPointerDownUpHandler) with EventSystem configured for new Input System
Tests/Scenes/NewInputSystem.unity.meta	Unity metadata for the test scene
Tests/Runtime/Operators/UguiClickOperatorTest.cs	Adds test case OperateAsync_NewInputSystem_InvokeOnClick to verify click operator functionality with new Input System

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[github-actions]

Code Metrics Report

	master (043f2af)	#288 (b44a2b9)	+/-
Coverage	88.9%	88.9%	0.0%
Code to Test Ratio	1:1.3	1:1.3	+0.0
Test Execution Time	12m41s	15m10s	+2m29s

Details

  |                     | master (043f2af) | #288 (b44a2b9) |  +/-   |
  |---------------------|------------------|----------------|--------|
  | Coverage            |            88.9% |          88.9% |   0.0% |
  |   Files             |               70 |             70 |      0 |
  |   Lines             |             2557 |           2557 |      0 |
  |   Covered           |             2275 |           2275 |      0 |
+ | Code to Test Ratio  |            1:1.3 |          1:1.3 |   +0.0 |
  |   Code              |             4578 |           4578 |      0 |
+ |   Test              |             6103 |           6112 |     +9 |
- | Test Execution Time |           12m41s |         15m10s | +2m29s |

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Reported by octocov