build: check for GNU-style word-boundary support also in the tiny version

The tiny version can do regex searches nowadays, so the user might use
the \< and \> anchors in their regexes.

This fixes https://savannah.gnu.org/bugs/?50008.

configure.ac

@@ -628,10 +628,8 @@ AC_CACHE_CHECK([for enhanced regular expression flag], nano_cv_flag_reg_extended
 AC_DEFINE_UNQUOTED(NANO_REG_EXTENDED, $nano_cv_flag_reg_extended,
 		   [Flag(s) to use to get the full range of extended regular expressions])
 
-if test x$color_support = xyes; then
-	# Now check for the end-of-word boundary support (/< and />).
+# Check for word-boundary support (/< and />).
 AC_MSG_CHECKING([for GNU-style word boundary regex support])
-
 AC_ARG_WITH(wordbounds,
 AS_HELP_STRING([--with-wordbounds], [Use GNU-style word boundary delimiters]),
 	[ case "$with_wordbounds" in
@@ -670,6 +668,7 @@ int main(void)
 	)
 ])
 
+if test x$color_support = xyes; then
 #    if test x$CURSES_LIB_NAME = xcurses; then
 	AC_MSG_CHECKING([whether _XOPEN_SOURCE_EXTENDED is needed])
 	AC_TRY_RUN([