ui - improve self review member approval

[ArtjomsPorss]

Description

use member comment to auto populate justification textarea when approving self review roles and groups

Contribution Checklist:

• The pull request does not introduce any breaking changes
• I have read the contribution guidelines.
• Create an issue and link to the pull request.

[chandrasekhar1996]

adding comment from offline conversation:

1. instead of using getRoles and getGroups to get details of all roles/groups in a domain, it would be better to do a getRole/Group call for specific collection which have a pending member

2. It will also be useful to check if the role/group data is already present in store, if not then make API call to get role/group and then store it in redux store.

[ArtjomsPorss]

adding comment from offline conversation:

1. instead of using getRoles and getGroups to get details of all roles/groups in a domain, it would be better to do a getRole/Group call for specific collection which have a pending member
2. It will also be useful to check if the role/group data is already present in store, if not then make API call to get role/group and then store it in redux store.

will make changes to cover both points

[ArtjomsPorss]

@chandrasekhar1996
https://github.com/AthenZ/athenz/pull/2849/files#diff-cb36fec9399cc92922646c454ed2ea4e6def1c54aff8931657551510f2b1a5eeR95-R107
double checked, this part handles point 2 - checks if pending members are in redux storage and not expired (5min), then returns them.
if expired or not present -> get from backend, enrich with selfServe and justification, store in redux storage.