Allow vendor-init-actionable for ro.debuggable

Some partners are using ro.debuggable as action trigger to config a
product differently according to its value.

Bug: 75987246
Test: succeeded building and tested taimen
Change-Id: I4cc57e7b52e17fc89e585afa0a8a10925e47fac8

init/stable_properties.h

@@ -37,6 +37,7 @@ static const std::set<std::string> kExportedActionableProperties = {
     "persist.sys.zram_enabled",
     "ro.bootmode",
     "ro.build.type",
+    "ro.debuggable",
     "sys.boot_completed",
     "sys.retaildemo.enabled",
     "sys.shutdown.requested",