Replace deprecated FontImage with FontImageSource in notes-app tutorial

[Copilot]

FontImage XAML markup extension is deprecated in .NET 10. The notes-app tutorial was using the deprecated syntax.

Changes

• Tutorial snippets: Updated all AllNotesPage.xaml files to use FontImageSource instead of FontImage
• Tutorial text: Updated notes-app.md explanation to reference FontImageSource
• Deprecation notes: Added deprecation warnings in image.md and consume.md
• Moniker scoping: Wrapped FontImage reference in fonts.md with .NET 8-9 moniker range

Before/After

<!-- Before (.NET 9 and earlier syntax, now deprecated) -->
<ToolbarItem IconImageSource="{FontImage Glyph='+', Color=Black, Size=22}" />

<!-- After -->
<ToolbarItem IconImageSource="{FontImageSource Glyph='+', Color=Black, Size=22}" />

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Issue with controls method 'FontImage' -> 'FontImageSource'</issue_title>
<issue_description>### Type of issue

Typo

Description

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:models="clr-namespace:Notes.Models"
             x:DataType="models:AllNotes"
             x:Class="Notes.Views.AllNotesPage"
             Title="AllNotesPage">

    <ContentPage.ToolbarItems>
        <ToolbarItem Text="Add" Clicked="Add_Clicked" IconImageSource="{FontImageSource Glyph='+', Color=Black, Size=22}" />
    </ContentPage.ToolbarItems>


    <CollectionView>
    </CollectionView>

</ContentPage>

In the mslearn documentation it is 'FontImage' that is obsolete with .NET 10.0.100, use 'FontImageSource'.

Page URL

https://learn.microsoft.com/en-us/dotnet/maui/tutorials/notes-app?view=net-maui-10.0

Content source URL

https://github.com/dotnet/docs-maui/blob/main/docs/tutorials/notes-app.md

Document Version Independent Id

720bf7f0-db92-f738-b864-ee149a02377b

Platform Id

295e87f0-f95d-10f0-eda0-721995eccb60

Article author

@davidortinau

Metadata

• ID: 720bf7f0-db92-f738-b864-ee149a02377b
• PlatformId: 295e87f0-f95d-10f0-eda0-721995eccb60
• Service: dotnet-mobile
• Sub-service: dotnet-maui

Related Issues</issue_description>

<agent_instructions>Correct this use of FontImage and lets inspect all of the docs for FontImage and replace it with FontImageSource, unless the mention is in the context of it being deprecated. If there is an apprpriate place, add a note box that FontImage is depreacted as of .NET 10 and will be released in a future release</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Issue with <ToolbarItem /> controls method 'FontImage' -> 'FontImageSource' #3111

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Internal previews

📄 File	🔗 Preview link
docs/tutorials/notes-app.md	docs/tutorials/notes-app
docs/user-interface/controls/image.md	docs/user-interface/controls/image
docs/user-interface/fonts.md	docs/user-interface/fonts
docs/xaml/markup-extensions/consume.md	docs/xaml/markup-extensions/consume

[learn-build-service-prod]

Learn Build status updates of commit 40d3607:

✅ Validation status: passed

For more details, please refer to the build report.

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

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[learn-build-service-prod]

Learn Build status updates of commit b40ce34:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/tutorials/notes-app.md	✅Succeeded	View (>=net-maui-8.0)
docs/tutorials/snippets/notes-app/allnotes/Views/AllNotesPage.xaml	✅Succeeded	View (>=net-maui-8.0)
docs/tutorials/snippets/notes-mvvm/bugs/Views/AllNotesPage.xaml	✅Succeeded	View (>=net-maui-8.0)
docs/tutorials/snippets/notes-mvvm/model/Views/AllNotesPage.xaml	✅Succeeded
docs/tutorials/snippets/notes-mvvm/viewmodel-shared/Views/AllNotesPage.xaml	✅Succeeded	View (>=net-maui-8.0)
docs/user-interface/controls/image.md	✅Succeeded	View (>=net-maui-8.0)
docs/user-interface/fonts.md	✅Succeeded	View (>=net-maui-8.0)
docs/xaml/markup-extensions/consume.md	✅Succeeded	View (>=net-maui-8.0)

For more details, please refer to the build report.