fix: Rollback incorrect high DPI calculations; format code; add manifest for .NET tools

[pomianowski]

Pull request type

Please check the type of change your PR introduces:

• Update
• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes

[Copilot]

Pull Request Overview

This PR rolls back incorrect DPI calculation adjustments, standardizes formatting across configuration and code files, updates package versions, and adds manifests for .NET tooling.

• Revert and reformat XML and C# code formatting
• Bump WPF-UI and DI package references to v4.0.3 and update project version to 4.0.3
• Introduce Visual Studio toolbox manifest and .NET tool manifest; add .csharpierignore

Reviewed Changes

Copilot reviewed 31 out of 31 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/Wpf.Ui.ToastNotifications/VisualStudioToolsManifest.xml	Inline empty <ToolboxItems> tag
src/Wpf.Ui.Gallery/ViewModels/Pages/Text/AutoSuggestBoxViewModel.cs	Split attribute and field declaration for readability
src/Wpf.Ui.Gallery/Controllers/MonacoController.cs	Collapse multi-line InvokeAsync call into single line
src/Wpf.Ui.Extension.Template.Fluent/Wpf.Ui.Fluent.csproj	Bump WPF-UI and DI dependencies to 4.0.3; update CommunityToolkit.Mvvm version
src/Wpf.Ui.Extension.Template.Compact/Wpf.Ui.Compact.csproj	Bump WPF-UI and DI dependencies to 4.0.3; update CommunityToolkit.Mvvm version
src/Wpf.Ui.Extension.Template.Blank/Wpf.Ui.Blank.csproj	Bump WPF-UI and DI dependencies to 4.0.3; update CommunityToolkit.Mvvm version
nuget.config	Remove extraneous blank lines
Directory.Build.targets	Reformat XML targets and properties
Directory.Build.props	Update package version to 4.0.3 and reformat multi-line conditions
.csharpierignore	Ignore .csproj files for CSharpier formatting
.config/dotnet-tools.json	Add manifest for CSharpier .NET tool

Comments suppressed due to low confidence (4)

src/Wpf.Ui.Extension.Template.Fluent/Wpf.Ui.Fluent.csproj:21

• Trailing whitespace in the Version attribute may cause package resolution to fail; please remove the extra space after the version number.

<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0 "/>

src/Wpf.Ui.Extension.Template.Compact/Wpf.Ui.Compact.csproj:21

• Trailing whitespace in the Version attribute may cause package resolution to fail; please remove the extra space after the version number.

<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0 "/>

src/Wpf.Ui.Extension.Template.Blank/Wpf.Ui.Blank.csproj:21

• Trailing whitespace in the Version attribute may cause package resolution to fail; please remove the extra space after the version number.

<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0 "/>

Directory.Build.props:64

• There is a stray '>' after the closing </IsBelowNet8> tag, which will break XML parsing. Please remove the extra '>'.

>