* style: post content design updates
* fix: fixing test cases
* fix: preview p changed from capital to small and 2px focus state border
* style: comment time moved next to author name
* fix: fixed post style according to figma
* test: added test cases for hover card component
* refactor: added utility func to check if last element of list
* fix: fixed blur event for actions dropdown
* fix: review fixees
* test: fixed test cases post mathjax-v3 merge
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Co-authored-by: Mehak Nasir <mehaknasir94@gmail.com>