Correctly log buffer unfreeze events

Previously the events were dropped on the floor since we were still
frozen.

Bug: 277974555
Test: atest
Change-Id: Ia6e26e8bc5226919d7b9797905bbd19f8503e7b2

packages/SystemUI/plugin/src/com/android/systemui/plugins/log/LogBuffer.kt

@@ -253,8 +253,8 @@ constructor(
     @Synchronized
     fun unfreeze() {
         if (frozen) {
-            log(TAG, LogLevel.DEBUG, { str1 = name }, { "$str1 unfrozen" })
             frozen = false
+            log(TAG, LogLevel.DEBUG, { str1 = name }, { "$str1 unfrozen" })
         }
     }