feat(timepicker): Add disabled options support for MatTimepickerOption

### Feature Description

Add support for disabling specific time options in `MatTimepicker` to prevent users from selecting certain hours, minutes, or time ranges when using `customOptions`

### Proposed API
```typescript
interface MatTimepickerOption {
/** Date value of the option. */
value: D;
/** Label to show to the user. */
label: string;
/** Option is enable or disable. */
disabled?: boolean
}
```

### Use Case

### **Event Booking (Bar / restaurant)**
Make clear that some time ranges are not available for booking (ie: Opening hours), instead of not showing them

Locate the MatTimepicker and MatTimepickerOption definitions, then trace how customOptions are handled for hours, minutes, and time ranges. Add coverage showing disabled options cannot be selected while remaining visible, and verify the existing timepicker tests pass.

Written by the indexing model from the issue text.