[PlanarReflection] Added probe tests

ScriptableRenderPipeline/HDRenderPipeline/HDRP/HDRenderPipelineAsset.asset

       cubeCookieTexArraySize: 16
       reflectionProbeCacheSize: 128
       planarReflectionProbeCacheSize: 128
-      reflectionCubemapSize: 512
-      planarReflectionTextureSize: 512
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+      planarReflectionTextureSize: 128
       reflectionCacheCompressed: 0
       planarReflectionCacheCompressed: 0
       maxPlanarReflectionProbes: 128

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Lighting/LightLoop/LightLoop.cs

             if (probe.planarReflectionProbe != null)
             {
                 envIndex = m_ReflectionPlanarProbeCache.FetchSlice(cmd, probe.texture);
-                envIndex = envIndex << 1 | (int)EnvCacheType.Texture2D;
+                envIndex = (envIndex << 1) | (int)EnvCacheType.Texture2D;
 
                 float nearClipPlane, farClipPlane, aspect, fov;
                 Color backgroundColor;

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