Fix incorrect error code for CREATE/ALTER TABLE COMPRESSION

Specifying an incorrect value for the compression method of an attribute
caused ERRCODE_FEATURE_NOT_SUPPORTED to be raised as error.  Use instead
ERRCODE_INVALID_PARAMETER_VALUE to be more consistent.

Author: Dilip Kumar
Discussion: https://postgr.es/m/CAFiTN-vH84fE-8C4zGZw4v0Wyh4Y2v=5JWg2fGE5+LPaDvz1GQ@mail.gmail.com

src/backend/commands/tablecmds.c

@@ -18640,7 +18640,7 @@ GetAttributeCompression(Form_pg_attribute att, char *compression)
 	cmethod = CompressionNameToMethod(compression);
 	if (!CompressionMethodIsValid(cmethod))
 		ereport(ERROR,
-				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+				(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
 				 errmsg("invalid compression method \"%s\"", compression)));
 
 	return cmethod;