Mark some phar tests as flaky on macOS

Fixes GH-15748
Closes GH-15876

Author: iluuu1994

ext/phar/tests/033a.phpt

@@ -5,6 +5,12 @@ phar
 --INI--
 phar.readonly=1
 phar.require_hash=0
+--SKIPIF--
+<?php
+if (getenv("GITHUB_ACTIONS") && PHP_OS_FAMILY === "Darwin") {
+    die("flaky Occasionally segfaults on macOS for unknown reasons");
+}
+?>
 --FILE--
 <?php
 $fname = __DIR__ . '/' . basename(__FILE__, '.php') . '.1.phar.php';

ext/phar/tests/phar_oo_002.phpt

@@ -5,6 +5,12 @@ phar
 --INI--
 phar.readonly=1
 phar.require_hash=0
+--SKIPIF--
+<?php
+if (getenv("GITHUB_ACTIONS") && PHP_OS_FAMILY === "Darwin") {
+    die("flaky Occasionally segfaults on macOS for unknown reasons");
+}
+?>
 --FILE--
 <?php
 

ext/phar/tests/stat.phpt

@@ -5,6 +5,12 @@ phar
 --INI--
 phar.require_hash=1
 phar.readonly=0
+--SKIPIF--
+<?php
+if (getenv("GITHUB_ACTIONS") && PHP_OS_FAMILY === "Darwin") {
+    die("flaky Occasionally segfaults on macOS for unknown reasons");
+}
+?>
 --FILE--
 <?php
 umask(0);

ext/phar/tests/tar/033a.phpt

@@ -5,6 +5,12 @@ phar
 --INI--
 phar.readonly=0
 phar.require_hash=0
+--SKIPIF--
+<?php
+if (getenv("GITHUB_ACTIONS") && PHP_OS_FAMILY === "Darwin") {
+    die("flaky Occasionally segfaults on macOS for unknown reasons");
+}
+?>
 --FILE--
 <?php
 

ext/phar/tests/zip/033a.phpt

@@ -5,6 +5,12 @@ phar
 --INI--
 phar.readonly=0
 phar.require_hash=0
+--SKIPIF--
+<?php
+if (getenv("GITHUB_ACTIONS") && PHP_OS_FAMILY === "Darwin") {
+    die("flaky Occasionally segfaults on macOS for unknown reasons");
+}
+?>
 --FILE--
 <?php
 

run-tests.php

@@ -2159,6 +2159,9 @@ function run_test(string $php, $file, array $env): string
         } elseif (!strncasecmp('xfail', $output, 5)) {
             // Pretend we have an XFAIL section
             $test->setSection('XFAIL', ltrim(substr($output, 5)));
+        } elseif (!strncasecmp('flaky', $output, 5)) {
+            // Pretend we have a FLAKY section
+            $test->setSection('FLAKY', ltrim(substr($output, 5)));
         } elseif ($output !== '') {
             show_result("BORK", $output, $tested_file, 'reason: invalid output from SKIPIF', $temp_filenames);
             $PHP_FAILED_TESTS['BORKED'][] = [