Add necessary SKIPIFs to new phpdbg tests

Similarly to other watchpoint tests, we add SKIPIFs.
These TRACKED_ALLOC issues should be investigated though [1] [2].

[1] https://gith

Add necessary SKIPIFs to new phpdbg tests

Similarly to other watchpoint tests, we add SKIPIFs.
These TRACKED_ALLOC issues should be investigated though [1] [2].

[1] https://github.com/php/php-src/commit/de5c760c698e98b82a1a168b693e4e07bc3a4134#comments
[2] https://github.com/php/php-src/pull/15229#pullrequestreview-2230563480

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Fix GH-15210: phpdbg_print_changed_zvals working on a real copy instead.

Close GH-15229