Remove Resource Download Page and fix UI on navbar

[prpjzz]

Description

#2680

Checklist

• The target PR branch is develop branch

[Copilot]

Pull Request Overview

This PR removes the resource download page from the LaunchGamePage and adjusts the navbar dimensions in MainView to improve the UI aesthetics.

• Removed the PivotItem and related UI components for the resource download page in LaunchGamePage.xaml
• Updated CompactPaneLength and OpenPaneLength values in MainView.xaml to better reflect the desired design

Reviewed Changes

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

File	Description
src/Snap.Hutao/Snap.Hutao/UI/Xaml/View/Page/LaunchGamePage.xaml	Removed the resource download page UI elements to deprecate this feature
src/Snap.Hutao/Snap.Hutao/UI/Xaml/View/MainView.xaml	Adjusted the navigation pane dimensions to enhance the navbar layout

Comments suppressed due to low confidence (3)

src/Snap.Hutao/Snap.Hutao/UI/Xaml/View/Page/LaunchGamePage.xaml:697

• [nitpick] Ensure that any bindings, converters, or dependencies exclusively tied to the removed resource download elements are cleaned up to maintain code clarity.

<PivotItem Header="{shuxm:ResourceString Name=ViewPageLaunchGameResourceHeader}">

src/Snap.Hutao/Snap.Hutao/UI/Xaml/View/MainView.xaml:54

• [nitpick] Verify that the new CompactPaneLength provides a consistent user experience across different screen sizes, as this value may affect the overall layout.

CompactPaneLength="45"

src/Snap.Hutao/Snap.Hutao/UI/Xaml/View/MainView.xaml:58

• [nitpick] Confirm that the new OpenPaneLength value is tested across various devices and window sizes to ensure optimal navigation pane rendering.

OpenPaneLength="205"