Themes cleanup (#4894)

(cherry picked from commit ad57fde1c5)

# Conflicts:
#	app/src/main/java/eu/kanade/tachiyomi/ui/base/activity/BaseThemedActivity.kt
#	app/src/main/res/values/themes.xml

app/src/main/AndroidManifest.xml

@@ -200,7 +200,7 @@
         <activity
             android:name="exh.ui.intercept.InterceptActivity"
             android:label="@string/app_name"
-            android:theme="@style/Theme.EHActivity">
+            android:theme="@style/Theme.Tachiyomi.Light">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
 
@@ -374,7 +374,7 @@
         </activity>
         <activity
             android:name="exh.ui.captcha.BrowserActionActivity"
-            android:theme="@style/Theme.EHActivity" />
+            android:theme="@style/Theme.Tachiyomi.Light" />
     </application>
 
 </manifest>