Nodes: Fix deprecation text to match code for tslFn (#26383)

* add support for meshPhongNodeMaterial

* update notice

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Co-authored-by: aardgoose <[email protected]>

examples/jsm/nodes/shadernode/ShaderNode.js

@@ -322,7 +322,7 @@ export const nodeImmutable = ( ...params ) => new ShaderNodeImmutable( ...params
 
 export const shader = ( jsFunc ) => { // @deprecated, r154
 
-	console.warn( 'TSL: shader() is deprecated. Use fn() instead.' );
+	console.warn( 'TSL: shader() is deprecated. Use tslFn() instead.' );
 
 	return new ShaderNode( jsFunc );