Deprecate macro calls without parentheses

[fabpot]

No description provided.

[upsun-dispatch]

📋 PR Summary

This PR deprecates calling a Twig macro without parentheses (e.g. macros.input or _self.(name)). MacroReferenceExpression gains a hasParentheses flag (defaulting to true) set by DotExpressionParser based on whether a ( follows the macro name; at compile time a deprecation is triggered when the flag is false and the node is not part of a defined test. Documentation, CHANGELOG, and a legacy integration test fixture are added.

Changes

Layer / File(s)	Summary
macro-call parsing
src/ExpressionParser/Infix/DotExpressionParser.php	Sets the new hasParentheses flag on the created MacroReferenceExpression based on whether the parsed dot access was a method call (Template::METHOD_CALL), for both static and dynamic macro names.
src/Node/Expression/MacroReferenceExpression.php	Adds a $hasParentheses property (default true) with an @internal setter, and triggers a 3.29 deprecation with template name/line during compile when parentheses are omitted and the node is not a defined test.
docs & changelog
CHANGELOG	Documents the new deprecation.
doc/deprecated.rst	Explains the deprecation and that parentheses remain optional for defined tests.
tests
tests/Fixtures/macros/call_without_parentheses.legacy.test	Adds an integration fixture asserting the deprecation fires for both static (macros.hello) and dynamic (_self.(name)) parenthesis-less calls.