WebGPURenderer: Restore isSampledTexture3D binding check (#1719)

Author: Methuselah96

types/three/src/renderers/common/nodes/NodeSampledTexture.d.ts

@@ -23,7 +23,7 @@ declare class NodeSampledCubeTexture extends NodeSampledTexture {
 }
 
 declare class NodeSampledTexture3D extends NodeSampledTexture {
-    readonly isSampledTexture3D = true;
+    readonly isSampledTexture3D: true;
 }
 
 export { NodeSampledCubeTexture, NodeSampledTexture, NodeSampledTexture3D };