nv-filters: Fix warnings with Visual Studio 2022 17.14

Following error occurs with Visual Studio 2022 v17.14 Preview 4.0 and
Windows 11 SDK 10.0.26100.0

nvidia-videofx-filter.c(133,9): error C2220: the following warning is
treated as an error
nvidia-videofx-filter.c(133,9): warning C5287: operands are different
enum types 'nvvfx_fx_id' and 'nvvfx_filter_id'; use an explicit cast to
silence this warning

The warning is reasonable, so change mismatched enum type.

Author: jeiea

plugins/nv-filters/nvidia-videofx-filter.c

@@ -41,7 +41,7 @@
 #define S_STRENGTH_DEFAULT 0.5
 #define TEXT_MODE_BLUR_STRENGTH MT_("Nvvfx.Method.Blur.Strength")
 
-enum nvvfx_filter_id { S_FX_AIGS, S_FX_BLUR, S_FX_BG_BLUR };
+enum nvvfx_fx_id { S_FX_AIGS, S_FX_BLUR, S_FX_BG_BLUR };
 
 bool nvvfx_loaded = false;
 bool nvvfx_new_sdk = false;
@@ -91,7 +91,7 @@ struct nvvfx_data {
 	int processing_counter;
 
 	/* blur specific */
-	enum nvvfx_filter_id filter_id;
+	enum nvvfx_fx_id filter_id;
 	NvVFX_Handle handle_blur;
 	CUstream stream_blur;        // cuda stream
 	float strength;              // from 0 to 1, default = 0.5