fix: add organizationID query for user v2 ListUsers and clean up depeprecated attribute (#7593)

Add organizationID as query for ListUsers and clean up the deprecated Organisation attributes in other queries.

This PR removes the following fields from API requests (user service v2):

organisation from AddHumanUser (deprecated some time ago, organization still exists)
organization from GetUserByID

pkg/grpc/user/v2beta/user.go

@@ -1,13 +1,3 @@
 package user
 
-type SearchQuery_ResourceOwner struct {
-	ResourceOwner *ResourceOwnerQuery
-}
-
-func (SearchQuery_ResourceOwner) isSearchQuery_Query() {}
-
-type ResourceOwnerQuery struct {
-	OrgID string
-}
-
 type UserType = isUser_Type

pkg/grpc/user/v2beta/user_service_org.pb.zitadel.go

@@ -1,12 +0,0 @@
-package user
-
-import "github.com/zitadel/zitadel/internal/api/grpc/server/middleware"
-
-// OrganisationFromRequest implements deprecated [middleware.OrganisationFromRequest] interface.
-// it will be removed before going GA (https://github.com/zitadel/zitadel/issues/6718)
-func (r *AddHumanUserRequest) OrganisationFromRequest() *middleware.Organization {
-	return &middleware.Organization{
-		ID:     r.GetOrganisation().GetOrgId(),
-		Domain: r.GetOrganisation().GetOrgDomain(),
-	}
-}