Fix segments query parameters in GET requests

[joanagmaia]

Changes proposed ✍️

Updated endpoints in frontend:

• GET https://cm.lfx.dev/api/activity/type
• GET https://cm.lfx.dev/api/activity/channel
• GET https://cm.lfx.dev/api/settings/members/attributes/${id}
• GET https://cm.lfx.dev/api/settings/members/attributes
• GET https://cm.lfx.dev/api/customview
• GET https://cm.lfx.dev/api/mergeActions

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screenshots to the PR description for relevant FE changes
• New backend functionality has been unit-tested.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.