Add `tab-*` utilities (#20022)

This PR adds new `tab-*` utilities.

The `tab-*` utilities set the `tab-size` property. They support positive
integer bare values, and arbitrary values:

| Class | CSS |
| -- | -- |
| `tab-2` | `tab-size: 2;` |
| `tab-[12px]` | `tab-size: 12px;` |

This also adds `tab-size` to the property order near the other text
layout properties.

## Test plan

1. Added new `tab-*` utility tests
2. Updated the intellisense snapshot
3. Other existing tests still pass