[DeadCode] Skip dead catch before catch-all Throwable/Exception in RemoveDeadCatchRector

[TomasVotruba]

Fixes #9888

A catch block that only re-throws its own exception is not dead when a later catch of Throwable or Exception handles the same exception differently. Removing it would let the exception fall through to the catch-all block and change behavior.

Because Throwable/Exception catch anything, the current catch type often cannot be resolved to prove the parent relation (e.g. a third-party ValidationException unknown to reflection). The rule now treats those two types as catch-all explicitly, so the preceding re-throw catch is kept.

Before (wrongly removed):

try {
    // ...
} catch (ValidationException $e) {
    throw $e;
} catch (\Exception $e) {
    echo 'general';
}

Added skip_dead_catch_before_catch_all_exception fixture covering the case.

https://claude.ai/code/session_011TpTyRop7qReoHY1MfLpqF