[PM-31052][PM-32469] Add V2UpgradeToken for key rotation without logout (#6995)

* User V2UpgradeToken for key rotation without logout

* reset old v2 upgrade token on manual key rotation

* sql migration fix

* missing table column

* missing view update

* tests for V2UpgradeToken clearing on manual key rotation

* V2 to V2 rotation causes logout. Updated wrapped key 1 to be a valid V2 encrypted string in tests.

* integration tests failures - increase assert recent for date time type from 2 to 5 seconds (usually for UpdatedAt assertions)

* repository test coverage

* migration script update

* new EF migration scripts

* broken EF migration scripts fixed

* refresh views due to User table alternation

util/PostgresMigrations/Migrations/20260219164255_V2UpgradeToken.cs

@@ -0,0 +1,27 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Bit.PostgresMigrations.Migrations;
+
+/// <inheritdoc />
+public partial class V2UpgradeToken : Migration
+{
+    /// <inheritdoc />
+    protected override void Up(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.AddColumn<string>(
+            name: "V2UpgradeToken",
+            table: "User",
+            type: "text",
+            nullable: true);
+    }
+
+    /// <inheritdoc />
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.DropColumn(
+            name: "V2UpgradeToken",
+            table: "User");
+    }
+}

util/PostgresMigrations/Migrations/DatabaseContextModelSnapshot.cs

@@ -2058,6 +2058,9 @@ namespace Bit.PostgresMigrations.Migrations
                     b.Property<bool>("UsesKeyConnector")
                         .HasColumnType("boolean");
 
+                    b.Property<string>("V2UpgradeToken")
+                        .HasColumnType("text");
+
                     b.Property<bool>("VerifyDevices")
                         .HasColumnType("boolean");