Update Maui version and add symbol package format

[pictos]

Update Maui version and add symbol package format

Updated MauiVersion in Directory.Build.props from 9.0.50 to 9.0.70.
Added SymbolPackageFormat with value snupkg in PJ.NavigationTrans.Maui.csproj to enhance debugging support.

[Copilot]

Pull Request Overview

This PR updates the MAUI SDK version and configures the project to produce symbol packages.

• Bumps the MAUI version from 9.0.50 to 9.0.70
• Enables snupkg symbol package output in the iOS/Android MAUI project

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
PJ.NavigationTrans.Maui.csproj	Added <SymbolPackageFormat>snupkg</SymbolPackageFormat> to enable symbol packages
Directory.Build.props	Updated MAUI version tag to 9.0.70

Comments suppressed due to low confidence (2)

Directory.Build.props:4

• The property name was changed from to , which may break versioning if other targets still reference MauiPackageVersion. Either revert to <MauiPackageVersion> or update all consumers to use MauiVersion consistently.

<MauiVersion>9.0.70</MauiVersion>

PJ.NavigationTrans.Maui/PJ.NavigationTrans.Maui.csproj:36

• [nitpick] Indent this line to match the surrounding <PropertyGroup> entries (use tabs instead of spaces) for consistent formatting.

<SymbolPackageFormat>snupkg</SymbolPackageFormat>