[php-src] PR #24659: Fix GH-24637: Check all parent interface constructors

Pull Request: https://github.com/php/php-src/pull/24659 Author: HarshitBavaliya Fixes GH-24637. > An overriding constructor is currently checked against only the single > interface constructor held as its prototype. When a parent implements > multiple interfaces, another interface may impose a stricter signature. > Check a child constructor against each constructor declared by the parent's > implemented interfaces. > > Remove the XFAIL from the existing reproducer and document this newly > enforced compatibility error in UPGRADING. > > Validation: > - make -j$(nproc) with --disable-all > --enable-cli --disable-cgi --without-pear > - Both constructor prototype PHPTs pass. > - Zend inheritance suite: 69 passed, 2 skipped, 0 failed. > > This pull request description was prepared with AI assistance.