openvinotoolkit#32389)

As Convert Op's [Specification
](https://docs.openvino.ai/2025/documentation/openvino-ir-format/operation-sets/operation-specs/type/convert-1.html)
said.

> Conversion of negative signed integer to unsigned integer value
happens in accordance with c++ standard. Notably, result is the unique
value of the destination unsigned type that is congruent to the source
integer modulo 2^N (where N is the bit width of the destination type).
**For example, when an int32 value -1 is converted to uint32 the result
will be uint32 max which is 4,294,967,295.**

### Reproduce:

Test when int32 value -1 convert to uint8
- OV GPU/NPU, got 255 (match the spec)
- OV CPU, it uses the boundary to clamp, got 0, not 255 (did't match the
spec)


```
import openvino as ov
import numpy as np

input_data = np.full((2, 2), -1, dtype=np.int32)
expected_output_data = np.full((2, 2), 2**8 - 1, dtype=np.uint8)

input_param = ov.op.Parameter(ov.runtime.Type.i32, ov.Shape([2, 2]))
convert_op = ov.opset1.convert(input_param, destination_type=ov.runtime.Type.u8)
model = ov.Model(results=[convert_op], parameters=[input_param], name="int32_to_uint8_convert")
core = ov.Core()
compiled_model = core.compile_model(model, "CPU")

results = compiled_model(input_data)
actual_output_data = results[compiled_model.outputs[0]]

try:
    print("--- Verification ---")
    np.testing.assert_array_equal(actual_output_data, expected_output_data)
    print("SUCCESS: Actual output matches expected output.")
except AssertionError as e:
    print(f"FAILED: Output mismatch!\n{e}")
```

```
--- Verification ---
FAILED: Output mismatch!
Arrays are not equal
...
 ACTUAL: array([[0, 0],[0, 0]], dtype=uint8)
 DESIRED: array([[255, 255],[255, 255]], dtype=uint8)
```

### Tickets:
 - *CVS-172796*