[Php70] Deprecate ListSwapArrayOrderRector, can turn valid code into broken code

[TomasVotruba]

ListSwapArrayOrderRector wraps the right-hand side of a list() assign with array_reverse(), on the premise that list() fills its targets in reverse order. That reverse order only matters when the same array variable is assigned across items (list($a[], $a[]) = [1, 2];). The rule cannot reliably tell that apart from independent assigns, so it can wrap array_reverse() where it is not wanted and turn valid code into broken code.

Deprecating it:

• rule now implements DeprecatedInterface, body throws
• removed from php70 and php-version-based sets
• removed its test fixtures

https://claude.ai/code/session_015VSEwd6ef1TqwYumj3R1jn