Force-disable icu4c use for now. To be revisited if Spotlight support
is reenabled.

Index: lib/util/charset/wscript_configure
--- lib/util/charset/wscript_configure.orig
+++ lib/util/charset/wscript_configure
@@ -41,7 +41,7 @@ conf.CHECK_CODE('''
 # as a single group. This had the benefit of working around ICU-22610, and also
 # works with the fix that was merged to ICU main in commit 199bc827.
 
-if conf.CHECK_CFG(package='icu-i18n icu-uc',
+if False and conf.CHECK_CFG(package='icu-i18n icu-uc',
                args='--cflags --libs',
                msg='Checking for icu-i18n icu-uc',
                uselib_store='ICUI18N'):
