This reverts commit 69c0d09 in #11390.
In order to future proof column prefs, it probably is best to continue
to use the current shape. This change was intended to ensure that as
little transformation to URL params was made as possible for #11387, but
we will likely transform them after all.
This will ensure that we can add support for additional properties over
time, as needed. For example, if we hypothetically wanted to add a
custom `label` or similar feature to columns prefs, it would make more
sense to use explicit properties to identity `accessor` and `active`.
For example:
```ts
[
{
accessor: "title",
active: true,
label: 'Custom Label' // hypothetical
}
]
```
6aa9da73f8