Merge branch...

Merge branch 'bugfix/zhengf/HUB-35836-block-removing-project-owner-without-direct-access-user' into 'release/MM_2023_10_x'

Resolve HUB-35836 "Bugfix/zhengf/ block removing project owner without direct access user"

See merge request blackduck/hub/hub-backend!6943

(cherry picked from commit 8ae1949d61411bc88d5cec89a674db2bc6d880bd)

d232a2ea HUB-35836: applying a fix to block unassigning project owner without designating a new one 8a9e8d3a Merge branch 'release/MM_2023_10_x' into... 63bd9055 Merge branch 'release/MM_2023_10_x' into... fc840757 HUB-35836: fixes tests based on review feedback