Fix critical entity rendering bug

Author: IMS212

src/main/java/net/irisshaders/iris/mixin/vertices/MixinBufferBuilder.java

@@ -160,18 +160,17 @@ private void injectMidBlock(float x, float y, float z, CallbackInfoReturnable<Ve
 		this.elementsToFill = this.elementsToFill & ~IrisVertexFormats.MID_TEXTURE_ELEMENT.mask();
 		this.elementsToFill = this.elementsToFill & ~IrisVertexFormats.TANGENT_ELEMENT.mask();
 
+		if (injectNormalAndUV1 && this.elementsToFill != (this.elementsToFill & ~VertexFormatElement.NORMAL.mask())) {
+			this.setNormal(0, 0, 0);
+		}
+
 		if (skipEndVertexOnce) {
 			skipEndVertexOnce = false;
 			return;
 		}
 
-
 		vertexPointers[iris$vertexCount] = vertexPointer;
 
-		if (injectNormalAndUV1 && this.elementsToFill != (this.elementsToFill & ~VertexFormatElement.NORMAL.mask())) {
-			this.setNormal(0, 0, 0);
-		}
-
 		iris$vertexCount++;
 
 		if (mode == VertexFormat.Mode.QUADS && iris$vertexCount == 4 || mode == VertexFormat.Mode.TRIANGLES && iris$vertexCount == 3) {