[php-src] Issue #10898: `IntlDateFormatter` returns wrong output for 1940 date in Amsterdam timezone

Issue: https://github.com/php/php-src/issues/10898 Author: jhogervorst ### Description The following code: ```php <?php $timezone = new DateTimeZone("Europe/Amsterdam"); $date = new DateTime("1940-01-01 00:00:00", $timezone); var_dump($date); $formatter = new IntlDateFormatter("en-US"); var_dump($formatter->format($date)); ``` Resulted in this output: ``` object(DateTime)#2 (3) { ["date"]=> string(26) "1940-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } string(69) "Sunday, December 31, 1939 at 11:40:00 PM Coordinated Universal Time" ``` But I expected this output instead: ``` object(DateTime)#2 (3) { ["date"]=> string(26) "1940-01-01 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } string(48) "Monday, January 1, 1940 at 12:00:00 AM GMT+00:20" ``` ## Additional details Until 16 May 1940, The Netherlands used [UTC+00:20](https://en.wikipedia.org/wiki/UTC%2B00:20) as timezone. It looks like IntlDateFormatter is not aware of the UTC+00:20 timezone, so it outputs the date in UTC. The occurrence of the problem seems related to the version of the ICU library: | **Environment** | **Source** | **PHP version** | **ICU version** | **Output** | |---|---|---|---|---| | 3v4l.org | https://3v4l.org/UoVSs | 8.2.4 | 57.1 | ✅ As expected | | Docker + Debian libicu | [Dockerfile](https://github.com/php/php-src/files/11026746/Dockerfile-debian-libicu.txt) | 8.2.4 | 67.1 | ❌ Wrong | | Docker + latest libicu | [Dockerfile](https://github.com/php/php-src/files/11026771/Dockerfile-latest-libicu.txt) | 8.2.4 | 72.1 | ❌ Wrong | I am not familiar enough with the ICU library to assess whether the problem originates there. Since the wrong output is present in PHP when using the latest versions (of PHP and the ICU library), I am submitting the bug here. ### PHP Version 8.2.4 ### Operating System _No response_