Option to select/deselect parent/child on selected of each other

Problem/Motivation

When user select parent and child result remain unchanged.

scenario 1:

• select parent 0 - 1
• check the results
• now select parent 1 - 1
• check the results are unchanged
• now select child 1
• check the results are unchanged

scenario 1:

• select child 1
• check the results
• now select child 2
• check the results are changed w.r.t child 1 and child 2
• now select parent 1 - 1
• check the results are changed w.r.t parent 1 - 1 and child items are ignored even they are selected which gives wrong visualization
• now select parent 0 - 1
• check the results are changed w.r.t parent 0 - 1 and parent 1 -1 and child items are ignored even they are selected which gives wrong visualization

Steps to reproduce

• create search view.
• add exposed filter with nested select list
• select parent option
• select child option
• verify that results are unchanged

Proposed resolution

Add option in better_exposed_filters setting to deselect parent on child selection and vice-versa.

Remaining tasks

1. Create MR
2. Reviewed by community
3. Merge MR
4. create new release

User interface changes

Yes, option in select to deselect parent on child selection and vice-versa

API changes

NO

Data model changes

TBD