The `$value` operator should set context

[kjellmorten]

With the following pipeline:

[
            { $value: ['table1', 'table2'] },
            {
              $filter: 'compare',
              path: '.',
              operator: 'in',
              not: true,
              valuePath: '^.excludeSubTables[]',
            },
          ]

... one would expect to filter by the values in excludeSubTables present on the object that was in the pipeline before we did $value, but it seems we get the level above that instead.

There is no way to get the object that was there before $value, and it seems to be "overwritten" in the context history.