Fixed an issue with debug menu item for Pyramid mips and another one with planar reflection render texture initialization.

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Debug/DebugDisplay.cs

 
         public float debugOverlayRatio = 0.33f;
         public FullScreenDebugMode  fullScreenDebugMode = FullScreenDebugMode.None;
-        public float fullscreenDebugMip = 0;
+        public float fullscreenDebugMip = 0.0f;
 
         public MaterialDebugSettings materialDebugSettings = new MaterialDebugSettings();
         public LightingDebugSettings lightingDebugSettings = new LightingDebugSettings();
             DebugMenuManager.instance.AddDebugItem<LightingDebugPanel, float>(kShadowMinValueDebug, () => lightingDebugSettings.shadowMinValue, (value) => lightingDebugSettings.shadowMinValue = (float)value);
             DebugMenuManager.instance.AddDebugItem<LightingDebugPanel, float>(kShadowMaxValueDebug, () => lightingDebugSettings.shadowMaxValue, (value) => lightingDebugSettings.shadowMaxValue = (float)value);
             DebugMenuManager.instance.AddDebugItem<LightingDebugPanel, int>(kFullScreenDebugMode, () => (int)fullScreenDebugMode, (value) => fullScreenDebugMode = (FullScreenDebugMode)value, DebugItemFlag.None, new DebugItemHandlerIntEnum(DebugDisplaySettings.lightingFullScreenDebugStrings, DebugDisplaySettings.lightingFullScreenDebugValues));
-            DebugMenuManager.instance.AddDebugItem<LightingDebugPanel, float>(
+            DebugMenuManager.instance.AddDebugItem<LightingDebugPanel, uint>(
                 kFullScreenDebugMip,
                 () =>
                 {

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Debug/LightingDebugPanel.cs

                         break;
                         }
                     default:
-                        fullScreenDebugMipHandler.SetValue(0f);
+                        fullScreenDebugMipHandler.SetValue(0);
                         break;
                 }
 

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/Reflection/ReflectionSystemInternal.cs

 
         public RenderTexture NewRenderTarget(PlanarReflectionProbe probe)
         {
-            RenderTextureDescriptor desc = new RenderTextureDescriptor();
-            desc.width = m_Parameters.planarReflectionProbeSize;
-            desc.height = m_Parameters.planarReflectionProbeSize;
-            desc.colorFormat = RenderTextureFormat.ARGBHalf;
-            desc.useMipMap = true;
-            var rt = new RenderTexture(desc);
+            var rt = new RenderTexture(m_Parameters.planarReflectionProbeSize, m_Parameters.planarReflectionProbeSize, 0, RenderTextureFormat.ARGBHalf);
+            rt.useMipMap = true;
+            rt.autoGenerateMips = false;
+            rt.Create();
             return rt;
         }