[Wi-Fi] Fix "work profile apps" icon color wrong issue

context.getTheme() can not get the right value when user application context.
Sol: Change to use Activity context to fix.

Bug: 147677926
Test: Manually test and observe.
Change-Id: Ibc8998872bb2c5555622c26a51a5eb9ebf5bdc31
diff --git a/packages/SettingsLib/src/com/android/settingslib/net/UidDetailProvider.java b/packages/SettingsLib/src/com/android/settingslib/net/UidDetailProvider.java
index e351615..dad82ee 100644
--- a/packages/SettingsLib/src/com/android/settingslib/net/UidDetailProvider.java
+++ b/packages/SettingsLib/src/com/android/settingslib/net/UidDetailProvider.java
@@ -63,7 +63,7 @@
     }
 
     public UidDetailProvider(Context context) {
-        mContext = context.getApplicationContext();
+        mContext = context;
         mUidDetailCache = new SparseArray<UidDetail>();
     }