[Dev UI] Add highlights for summary metrics in the comparison headers

[hritan]

Acceptance criteria:

1. Highlight the summary metrics in comparison header based on the baseline values. (need more info)
2. Display only the selected metric summary in evals table headers.

[hritan]

@ssbushi can you add more info to this task.

1. what would be the logic behind highlighting.
2. should I use the existing metric selector to filter the metric summary in the header as well or should we have a new way to filter the metric summary.

[ssbushi]

1. Once a comparison metric is selected, we hide all other metric chips from the OUTPUT cell. Similarly, we should hide other aggregate metrics from the header and only show aggregates related to the selected metric.
   1 a. We can then highlight if the comparison aggregate PASS rate is better or worse than the baseline. For now, let us limit it to only PASS rate and use the same color schema as the metric chips.
2. Yes, it should work with the existing comparison-metric-selector.