[LyX/2.3.x] Fix #12524. From Enrico.

[Richard Kimberly Heck]

commit 4af43b6d52aca67ea58178d6ada1893124cd1bee
Author: Richard Kimberly Heck <rikiheck at lyx.org>
Date:   Tue Nov 22 21:28:14 2022 -0500

    Fix #12524. From Enrico.
---
 src/mathed/InsetMathMacro.cpp |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/mathed/InsetMathMacro.cpp b/src/mathed/InsetMathMacro.cpp
index 5e72eec..1a5e220 100644
--- a/src/mathed/InsetMathMacro.cpp
+++ b/src/mathed/InsetMathMacro.cpp
@@ -908,14 +908,18 @@ void InsetMathMacro::validate(LaTeXFeatures & features) const
 			features.require(data->requires());
 	}
 
-	if (name() == "binom")
-		features.require("binom");
-
 	// validate the cells and the definition
 	if (displayMode() == DISPLAY_NORMAL) {
 		d->definition_.validate(features);
-		InsetMathNest::validate(features);
+	} else if (displayMode() == DISPLAY_INIT) {
+		MathData ar(const_cast<Buffer *>(&buffer()));
+		MacroData const * data = buffer().getMacro(name());
+		if (data) {
+			asArray(data->definition(), ar);
+			ar.validate(features);
+		}
 	}
+	InsetMathNest::validate(features);
 }