[LyX/master] Use cached label for statistics and plaintext (#13322)

[Juergen Spitzmueller]

commit 7e69673c3b764bb28d2e24e46a25fce2f4253783
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Sun Jun 7 07:57:10 2026 +0200

    Use cached label for statistics and plaintext (#13322)
---
 src/insets/InsetCitation.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/insets/InsetCitation.cpp b/src/insets/InsetCitation.cpp
index 980b37fe64..fc65cce3db 100644
--- a/src/insets/InsetCitation.cpp
+++ b/src/insets/InsetCitation.cpp
@@ -601,7 +601,7 @@ int InsetCitation::plaintext(odocstringstream & os,
 	if (cmd == "nocite")
 		return 0;
 
-	docstring const label = generateLabel();
+	docstring const label = cache.generated_label;
 	os << label;
 	return label.size();
 }
@@ -788,7 +788,7 @@ void InsetCitation::latex(otexstream & os, OutputParams const & runparams) const
 
 void InsetCitation::updateStatistics(Statistics & stats) const
 {
-	stats.update(generateLabel(false));
+	stats.update(cache.generated_label);
 }