`IndexTable` color updates

[sarahill]

Specific index table color updates. The majority of the colors will be updated via migration but there are a couple that need a manual update for correct token application.

Selected states:

State	Old token	New token	Value
selected	bg-primary-subdued-selected	surface-selected
selected + hover	bg-primary-subdued-hover	surface-hover
subdued + selected	bg-primary-subdued-selected	surface-selected