Implement soft float64 conversion on shaders when host has no support (#5159)

* Implement soft float64 conversion on shaders when host has no support

* Shader cache version bump

* Fix rebase error

src/Ryujinx.Graphics.Shader/IGpuAccessor.cs

@@ -331,6 +331,15 @@ namespace Ryujinx.Graphics.Shader
             return true;
         }
 
+        /// <summary>
+        /// Queries host GPU support for 64-bit floating point (double precision) operations on the shader.
+        /// </summary>
+        /// <returns>True if the GPU and driver supports double operations, false otherwise</returns>
+        bool QueryHostSupportsShaderFloat64()
+        {
+            return true;
+        }
+
         /// <summary>
         /// Queries host GPU support for signed normalized buffer texture formats.
         /// </summary>