[php-src] PR #24776: ext/intl: Clarify ICU version requirements in intl test skip messages

Pull Request: https://github.com/php/php-src/pull/24776 Author: LamentXU123 The SKIPIF debugging message is a complete mess. SKIP for ICU > XX.X is a very vague wording. It can mean we skip when ICU is bigger than XX.X and also can mean when ICU is smaller or equal to XX.X https://github.com/php/php-src/blob/1cc5591b482e3ec603403f222a442e1bfcd77ff1/ext/intl/tests/bug69398.phpt#L7 https://github.com/php/php-src/blob/1cc5591b482e3ec603403f222a442e1bfcd77ff1/ext/intl/tests/bug69398-icu74.1.phpt#L7 https://github.com/php/php-src/blob/1cc5591b482e3ec603403f222a442e1bfcd77ff1/ext/intl/tests/rangeformatter/basic.phpt#L7-L8 https://github.com/php/php-src/blob/1cc5591b482e3ec603403f222a442e1bfcd77ff1/ext/intl/tests/breakiter_getLocale_basic2.phpt#L6 https://github.com/php/php-src/blob/1cc5591b482e3ec603403f222a442e1bfcd77ff1/ext/intl/tests/timezone_IDforWindowsID_basic_icu58_1.phpt#L7 Those are just some examples. Let's instead use skip this test because it requires ICU ...