WS

Clarify the stack limit exception message

Make it clearer why the size is not exactly zend.max_allowed_stack_size

Fix GH-12643: Stack limit tests failing on ppc64le

These tests were setting zend.max_allowed_stack_size to a small value. On ppc64le
this value is too small and the limit may be reached

Fix GH-12643: Stack limit tests failing on ppc64le

These tests were setting zend.max_allowed_stack_size to a small value. On ppc64le
this value is too small and the limit may be reached too soon.

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Fix test failures when PHP is compiled without ZEND_CHECK_STACK_LIMIT
(e.g. 32-bit CLANG build with address sanitizer)

Limit stack size (#9104)