[VK] Rework SPIRV Shader Optimization (#238)

The actual SPIRV Shader Optimization option doesn't seem to do anything as long as it isn't vinculed, so let's rework it to make it work

Co-authored-by: Gamer64 <76565986+Gamer64ytb@users.noreply.github.com>
Co-authored-by: echosys <echosys@noreply.localhost>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/238

src/video_core/cdma_pusher.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Ryujinx Team and Contributors
 // SPDX-License-Identifier: MIT