feat: Adding the game's name to the app context

[bitsandfoxes]

Adding the game's name to the app context. This should be especially helpful in case of UaaL.

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Instructions and example for changelog

Please add an entry to CHANGELOG.md to the "Unreleased" section. Make sure the entry includes this PR's number.

Example:

## Unreleased

- Adding the game's name to the app context ([#2083](https://github.com/getsentry/sentry-unity/pull/2083))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description.

Generated by 🚫 dangerJS against c0e50ba

[Copilot]

Pull Request Overview

This PR adds the game's name to the app context so that it can be reported alongside other app metadata. The changes update the integration code to assign the game's name from the application, add tests to verify that the value is set correctly, and update the changelog accordingly.

• Updated the integration code to assign the game's name
• Added tests to verify that the game's name is set in the app context
• Updated the changelog with the new feature

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
test/Sentry.Unity.Tests/UnityEventScopeTests.cs	Added tests to verify that the app context properly includes the game's name
src/Sentry.Unity/Integrations/UnityScopeIntegration.cs	Updated to assign the game's name to the app context
CHANGELOG.md	Updated changelog with a note about the new feature