feat(MembersRoute): add actions dropdown to the table of organization members TASK-987 TASK-990

[magicznyleszek]

🗒️ Checklist

1. run linter locally
2. update all related docs (API, README, inline, etc.), if any
3. draft PR with a title <type>(<scope>)<!>: <title> TASK-1234
4. tag PR: at least frontend or backend unless it's global
5. fill in the template below and delete template comments
6. review thyself: read the diff and repro the preview as written
7. open PR & confirm that CI passes
8. request reviewers, if needed
9. delete this section before merging

📣 Summary

In Members Table (from Account → Team/Organization → Members) add actions dropdown with one action. The action allows removing a member or leaving the organization.

📖 Description

The availability of "Remove" action is based on the role of the logged in user. When trying to remove user (or leave organization) a confirmation prompt is being shown.

👀 Preview steps

1. ℹ️ have multiple different users
2. for one of the users (e.g. "joe"), use http://kf.kobo.local/admin/organizations/organization/ to add multiple users into joe's organization
3. For one of the users (e.g. "sue") set the role to "admin"
4. enable "Multi-members override" for joe's organization
5. enable feature flag mmosEnabled
6. navigate to #/account/organization/members
7. 🟢 notice that a table of organization members displays a list of users added in step 2
8. 🟢 notice that in the table "joe" (as owner) has an ability to remove all organization members (excluding themselves) including "sue" who's an admin

As continuation for above steps:

1. log in as "sue"
2. navigate to #/account/organization/members
3. 🟢 notice that in the table "joe" (the owner) has no actions available
4. 🟢 notice that any "member" user in the table has actions available, and if you click "Remove" a confirmation prompt will appear
5. 🟢 notice that for "sue" the action available is "Leave team"/"Leave organization", and if you click it, a confirmation prompt will appear - and it will have different content than confirmation prompt for removing a member

As continuation for above steps:

1. pick a "member" user and use "Remove" action
2. confirm prompt
3. 🟢 verify that user was removed successfuly

💭 Notes

Build atop #5281