39362: remove old code for PHP versions we no longer support

[SilinMykola]

Description (*)

Fixed Issues (if relevant)

1. Fixes Remove old code for php versions we no longer support #39362

Manual testing scenarios (*)

1. ...
2. ...

Questions or comments

Contribution checklist (*)

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• All new or changed code is covered with unit/integration tests (if applicable)
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• All automated tests passed successfully (all builds are green)

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[Copilot]

Pull Request Overview

This PR removes outdated code that was specifically written to handle compatibility with HHVM (Hip Hop Virtual Machine) and older PHP versions that are no longer supported.

• Removes HHVM-specific test skips and workarounds across numerous test files
• Updates hash algorithm default from conditional to always use 'xxh128'
• Removes PHP version checks and HHVM references from configuration files

Reviewed Changes

Copilot reviewed 57 out of 57 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
pub/.htaccess	Updates comment to remove HHVM reference
lib/internal/Magento/Framework/Stdlib/DateTime/DateTimeFormatter.php	Simplifies initialization to always use IntlFormatObject
lib/internal/Magento/Framework/Jwt/JwkFactory.php	Removes resource cleanup for older PHP versions
app/code/Magento/CatalogImportExport/Model/Import/Product.php	Updates hash algorithm to always use xxh128
Multiple test files	Removes HHVM-specific test skips and compatibility checks

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[Copilot]

[nitpick] Direct property assignment to a mock object might fail if queryString is not a defined property on the mock. Consider using the expects() method or ensuring the mock is properly configured to accept this property.

Suggested change

	$this->pdoStatementMock->queryString = $query;
	$this->pdoStatementMock->expects($this->any())
	->method('__get')
	->with('queryString')
	->willReturn($query);

[ihor-sviziev]

@SilinMykola, please double-check this place, most likely the fix is needed here

[orlangur]

Nice catch! Wanted to remove HHVM-related stuff ages ago :)