DolphinQt: Save when closing settings window

If Dolphin crashes, changes that have been made to settings are often
lost. This has been a minor annoyance for me when developing, but it has
become a much bigger issue recently due to the problem where Dolphin
freezes on shutdown for ROG Ally users.

Instead of saving the config when certain arbitrary settings are
changed, let's save the config when the user closes the settings window.

GameSettings: Add patches for Need for Speed: Hot Pursuit 2 to limit the internal frame rate.

GameSettings: Add patch to limit framerate in Monster 4x4: Stunt Racer.

GameSettings: Add patches to limit the internal frame rate in Rabbids Go Home and Rabbids Lab.

Metal: Always run endEncoding on command encoders

Fixes a macOS Metal crash when stopping immediately after boot starts.

m_upload_encoder and m_texture_upload_encoder could be dealloc'd during shutdown before endEncoding could be called, which causes a Metal assertion failure.

Co-authored-by: OatmealDome <julian@oatmealdome.me>

VertexLoaderManager: Fix crash caused by invalid array base