[GPU] Change eltwise quantized data behavior from saturation to overflow

[p-wysocki]

Details:

• See task description
• Reproducer script now returns correct results
• Added test

Tickets:

• 179285

[michal-miotk]

please extend range of this PR to all kernels which use saturation

[p-wysocki]

@michal-miotk I extended the PR to eltwise_blocked_opt.cl and added a new test. The only other places using saturation I see are quantization (where I assume it's expected) and reorders (ex. float -> int). If there's more please let me know, I haven't contributed to GPU much yet.

[isanghao]

random spot) this change itself looks good. but I think it is necessary to check potential side-effect. Could you trigger onepunch accuracy test?