Handle ternary operator in arrays and objects.

[antoineveldhoven]

Aiming to fix #853

Copilot assisted commit.

[Copilot]

Pull Request Overview

This PR fixes issue #853 by implementing proper handling of shorthand ternary operators (a ? b) within arrays and objects. The key improvement is using an explicit hasColon flag to differentiate between full ternary operators (a ? b : c) and shorthand ternary operators (a ? b), replacing the previous fragile approach that relied on checking for undefined values.

Key Changes:

• Added hasColon flag tracking during expression compilation to distinguish full vs shorthand ternary operators
• Refactored ternary operator parsing to explicitly handle shorthand and full ternary cases separately
• Added test coverage for shorthand ternary operators in both objects and arrays

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
test/test.expressions.js	Adds two new test cases for shorthand ternary operators inside objects and arrays
src/twig.expression.operator.js	Updates operator.parse to accept token parameter and handle shorthand ternary logic explicitly based on hasColon flag
src/twig.expression.js	Sets hasColon flag when : follows ? operator, and updates all operator.parse calls to pass token parameter

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