browsers: force_install Privacy Badger again

While this isn't the recommended configuration, Privacy Badger has the
widget replacements, automatic learning (enabled by default as per
this policy), canvas protection etc.

AdNauseam again can replace NoScript (that I previously removed from
the policies for too aggressive for basic users) and fails to click ads
for me anyway, so I think this is the best option for me.

etc/firefox/policies/policies.json

@@ -41,7 +41,7 @@
       },
       "jid1-MnnxcxisBPnSXQ-eff@jetpack": {
         "install_url": "https://www.eff.org/files/privacy-badger-latest.xpi",
-        "installation_mode": "normal_installed"
+        "installation_mode": "force_installed"
       },
       "jid1-ZAdIEUB7XOzOJw@jetpack": {
         "install_url": "https://addons.mozilla.org/firefox/downloads/latest/duckduckgo-for-firefox/latest.xpi",

etc/opt/chromium/policies/managed/aminda-extensions.json

@@ -83,7 +83,7 @@
       "update_url": "https://clients2.google.com/service/update2/crx"
     },
     "pkehgijcmpdhfbdbbnkijodmdjhbjlgp": {
-      "installation_mode": "normal_installed",
+      "installation_mode": "force_installed",
       "override_update_url": true,
       "toolbar_pin": "force_pinned",
       "update_url": "https://clients2.google.com/service/update2/crx"