nano: fix syntax highlighting for raw ucode scripts

Text between interpreter line and start of first directive should only
highlighted as uninterpreted when running in template mode, so adjust
the match rule accordingly.

Fixes: #23761
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit 8f9564387d)

utils/nano/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nano
 PKG_VERSION:=7.2
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@GNU/nano

utils/nano/files/ucode.nanorc

@@ -43,7 +43,7 @@ color ,green "[[:space:]]+$"
 
 # Text outside template directives
 color slate start="[}%#]\}" end="\{[{%#]"
-color slate start="^#!" end="\{[{%#]"
+color slate start="^#!.*(\<utpl\>|[[:space:]]-[[:alnum:]]*T[[:alnum:]]*\>)" end="\{[{%#]"
 color slate "^([^{%#}]|\{[^{%#]|[%#}][^}])+\{[{%#]"
 
 # Template tags