feat(shader): implement geometry shader invocation info

- Update EmitInvocationInfo in SPIRV backend to handle geometry shader stage

ref: 1266fad681 (diff-4cbf73a98ed4ad649a4a6f38b569bc31fcf68cf7)

src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp

@@ -547,8 +547,9 @@ Id EmitInvocationInfo(EmitContext& ctx) {
     switch (ctx.stage) {
     case Stage::TessellationControl:
     case Stage::TessellationEval:
-        return ctx.OpShiftLeftLogical(ctx.U32[1], ctx.OpLoad(ctx.U32[1], ctx.patch_vertices_in),
-                                      ctx.Const(16u));
+        return ctx.OpShiftLeftLogical(ctx.U32[1], ctx.OpLoad(ctx.U32[1], ctx.patch_vertices_in), ctx.Const(16u));
+    case Stage::Geometry:
+        return ctx.OpShiftLeftLogical(ctx.U32[1], ctx.Const(InputTopologyVertices::vertices(ctx.runtime_info.input_topology)), ctx.Const(16u));
     default:
         LOG_WARNING(Shader, "(STUBBED) called");
         return ctx.Const(0x00ff0000u);