Refactor GameDetailPage for improved state management and media handling

[Stivenjs]

This pull request refactors the GameDetailPage component to improve how media assets and game data are handled during game installation. The changes simplify state management for the install modal, remove unnecessary image handling from the state, and introduce a new approach for passing media data. Additionally, there is a minor workflow adjustment in the release process.

Game install modal improvements:

• The installingFromSource state in GameDetailPage.tsx is simplified to only track the size property, removing the previously included image property. [1] [2]
• Media data for the install modal is now prepared using a useMemo hook (installModalMediaBySteamAppId), which constructs a record of media assets keyed by Steam App ID. This is passed to the InstallModal component instead of a single image. [1] [2] [3]
• The InstallModal is now rendered only if both installingFromSource and game are present, and it receives the new game and mediaBySteamAppId props instead of gameImage.

Code cleanup:

• Removed unused import of getGameImageUrl from @utils/gameImage in GameDetailPage.tsx.
• Added import of useMemo and SteamAppdetailsMediaResult for improved type safety and memoization. [1] [2]

Workflow update:

• In .github/workflows/release.yml, the generate_release_notes: true option is removed from the GitHub release action, likely to prevent automatic generation of release notes.