Work item roll up count by type should be updated on reorder and remove operations starting 2nd level in work item tree

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The following discussion from !162522 (merged) should be addressed:

Update count roll up on header and children on reorder and remove operations.

Use cases

Use case	legacy epics rollup count	work items rollup count	Approach
Move and reorder work items in tree	DOES NOT UPDATE ROLLUP COUNT ON REORDER Screen Recording 2024-09-09 at 14.31.43.mov	SAME BEHAVIOUR	subscriptions from backend on reorder OR frontend POC to call to query again
Remove the work item from the tree	UPDATES THE ROLLUP COUNT OF THE TREE BUT IS RELATIVELY EASIER SINCE IT INVOLVES ONLY ONE LEVEL Screen Recording 2024-09-09 at 15.03.58.mov	DOES NOT UPDATE THE ROLLUP COUNT	need to do a frontend POC to call the query again and reflect the changes till we wait for work item update changes
Add a work item to the tree	updates the count	No it does not	try calling the query again till we wait for backend subscription