[MM-62553]+[MM-62554] Property Architecture: cursor based pagination (#30119)

* refactor: Replace pagination with cursor-based pagination for custom profile attributes

* remove pagination loop on property value retrieval for CPA

* add migrations to optimize pagination on property fields and values

* adapt test to remove pagination check

* update migrations list

* postgres: drop index concurrently

* concurrent index manipulation must be done outside of a Tx

* fix: Correct SQL index drop syntax from "OM" to "ON" in migration files

* test: Add CountForGroup test cases for property field store

* refactor: Add CountForGroup method to PropertyFieldStore interface and implementations

* Fix style and i18n

* feat: Add optional deleted property field filtering to CountForGroup method

* refactor: Update CountForGroup to support optional deleted property fields

* test: Add comprehensive tests for CountForGroup with includeDeleted parameter

* adapt test + gen layers

* rename property service method and set the includeDelete to false

* refactor: Remove redundant constant and use CustomProfileAttributesFieldLimit directly

* fix tests

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/public/model/property_value.go

@@ -6,6 +6,8 @@ package model
 import (
 	"encoding/json"
 	"net/http"
+
+	"github.com/pkg/errors"
 )
 
 type PropertyValue struct {
@@ -63,12 +65,36 @@ func (pv *PropertyValue) IsValid() error {
 	return nil
 }
 
+type PropertyValueSearchCursor struct {
+	PropertyValueID string
+	CreateAt        int64
+}
+
+func (p PropertyValueSearchCursor) IsEmpty() bool {
+	return p.PropertyValueID == "" && p.CreateAt == 0
+}
+
+func (p PropertyValueSearchCursor) IsValid() error {
+	if p.IsEmpty() {
+		return nil
+	}
+
+	if p.CreateAt <= 0 {
+		return errors.New("create at cannot be negative or zero")
+	}
+
+	if !IsValidId(p.PropertyValueID) {
+		return errors.New("property field id is invalid")
+	}
+	return nil
+}
+
 type PropertyValueSearchOpts struct {
 	GroupID        string
 	TargetType     string
 	TargetID       string
 	FieldID        string
 	IncludeDeleted bool
-	Page           int
+	Cursor         PropertyValueSearchCursor
 	PerPage        int
 }