Revert "Fix initialism errors (PR-3) (#17062)" (#17202)

This reverts commit ea61458f16. This was causing panic in the plugins because the client and the plugin API changed with this PR

api4/group_test.go

@@ -963,7 +963,7 @@ func TestGetGroups(t *testing.T) {
 	assert.Equal(t, groups[0].Id, th.Group.Id)
 }
 
-func TestGetGroupsByUserID(t *testing.T) {
+func TestGetGroupsByUserId(t *testing.T) {
 	th := Setup(t).InitBasic()
 	defer th.TearDown()