docs(pivotgrid): Prohibit separate base functionality usage (#2092)

* docs(pivotgrid): Prohibit separate base functionality usage

* Update components/pivotgrid/overview.md

Author: dimodi

components/pivotgrid/overview.md

@@ -54,9 +54,12 @@ The PivotGrid is an integrated product that includes several Razor components:
     * Add a `<TelerikPivotGridConfiguratorButton>`.
     * Wrap both tags and `<TelerikPivotGrid>` with a `<TelerikPivotGridContainer>`.
 
+> The Telerik PivotGrid for Blazor [depends on two additional NuGet packages]({%slug getting-started/what-you-need%}#nuget-packages). They are installed automatically when using the [Telerik NuGet feed]({%slug installation/nuget%}) and must not be used separately with other custom or third-party tools.
+
 >caption PivotGrid with configurator and local data
 
 <div class="skip-repl"></div>
+
 ````CSHTML
 <TelerikPivotGridContainer>
 
@@ -216,6 +219,7 @@ The Pivot Grid exposes methods for programmatic operation. To use them, define a
 >caption Obtain reference to the PivotGrid instance and execute methods
 
 <div class="skip-repl"></div>
+
 ````CSHTML
 <TelerikPivotGrid @ref="@PivotGridRef" />
 

getting-started/what-you-need.md

@@ -56,8 +56,8 @@ Telerik UI for Blazor is distributed through several private and public NuGet pa
 | `Telerik.Recurrence` | Adds support for recurring appointments in the [Scheduler component]({%slug scheduler-overview%}). |
 | `Telerik.Documents.SpreadsheetStreaming` | Adds support for working with spreadsheet documents, and exporting to Excel or CSV. This package is part of [Telerik Document Processing]({%slug common-features-dpl%}). |
 | `Telerik.Zip` | Contains code for working with ZIP archives and Excel files. Excel files are actually ZIP archives and this package takes part in the exporting process. This package is part of [Telerik Document Processing]({%slug common-features-dpl%}). |
-| `Telerik.Pivot.Core` | Contains base code for the [PivotGrid component]({%slug pivotgrid-overview%}). |
-| `Telerik.Pivot.DataProviders.Xmla` | Adds support for [data binding the PivotGrid component to XMLA]({%slug pivotgrid-data-binding%}). |
+| `Telerik.Pivot.Core` | Contains base code for the [PivotGrid component]({%slug pivotgrid-overview%}). This NuGet package must not be used separately without the Telerik PivotGrid component. |
+| `Telerik.Pivot.DataProviders.Xmla` | Adds support for [data binding the PivotGrid component to XMLA]({%slug pivotgrid-data-binding%}). This NuGet package must not be used separately without the Telerik PivotGrid component. |
 
 >note If you use a trial license, the private package names have a `.Trial` suffix, for example, `Telerik.UI.for.Blazor.Trial`.