[Table Viewer] - Accessibility Enhancements

[scottdover]

There were a few issues mentioned in #1622 that are less about functionality and more about accessibility. These should be prioritized/addressed after initial column sorting work is completed:

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UI diff on column name
1.There is no tooltip for type icon, truncated column name, sorting indicator and menu icon
2.Type icon truncation

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Keyboard accessibility currently doesn't work for the grid menu. Lets address that in this issue