[pull] master from php:master - #1227
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Reject a $maxEvents value greater than INT_MAX instead of truncating it, which prevents an integer overflow where SIZEOF_INT < SIZEOF_ZEND_LONG. Close GH-23468
stream_bucket_prepend()/append() assumed a successful zend_read_property() of StreamBucket::$data always yields a string, but for an unset typed property it throws while returning &EG(uninitialized_zval), so Z_STRLEN_P() dereferenced a NULL string pointer and crashed when the brigade was consumed. Reject non-string reads up front (rethrowing any pending exception) so the bucket is never re-attached with undefined data; the sibling $bucket property path is already safe because zend_fetch_resource_ex() rejects non-resources. Closes GH-23466
* PHP-8.4: [standard] Fix crash when filter callback unsets StreamBucket::$data
* PHP-8.5: [standard] Fix crash when filter callback unsets StreamBucket::$data
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