Update API of sysprop_library to match current.txt

The current.txt is updated by:
m com.android.sysprop.watchdog-dump-api && \
    rm -rf frameworks/base/core/sysprop/api/com.android.sysprop.watchdog-current.txt && \
    cp -f out/soong/.intermediates/frameworks/base/core/sysprop/com.android.sysprop.watchdog_sysprop_library/api-dump.txt \
    frameworks/base/core/sysprop/api/com.android.sysprop.watchdog-current.txt

Bug: 170935569
Change-Id: Ie6d6ff5ed6c3883cb3459b8fb57ca18f4ce28098

core/sysprop/api/com.android.sysprop.watchdog-current.txt

-props {
-  module: "android.sysprop.WatchdogProperties"
-  prop {
-    api_name: "fatal_count"
-    type: Integer
-    scope: Internal
-    prop_name: "framework_watchdog.fatal_count"
-  }
-  prop {
-    api_name: "fatal_window_second"
-    type: Integer
-    scope: Internal
-    prop_name: "framework_watchdog.fatal_window.second"
-  }
-  prop {
-    api_name: "is_fatal_ignore"
-    scope: Internal
-    prop_name: "persist.debug.framework_watchdog.fatal_ignore"
-  }
-}