[Improvement] Improve validation in SetModelVersionProperty.java

### What would you like to be improved?

Prevent the SetModelVersionProperty CLI command from accepting both an alias and version (or neither), ensuring it fails instead of invoking the server with invalid inputs. Include unit tests, for example:
```
@Test
void validateBothAliasAndVersion() {
CommandLine mockCmdLine = Mockito.mock(CommandLine.class);
CommandContext context = new CommandContext(mockCmdLine);

SetModelVersionProperty command =
new SetModelVersionProperty(
context,
"metalake1",
"catalog1",
"schema1",
"model1",
1,
"alias1",
"prop",
"value");

Assertions.assertThrows(RuntimeException.class, command::validate);
}
```

### How should we improve?

Improve validation and add unit tests, note you'll need to do this ` Main.useExit = false;`.