Remove Deprecated Force Dark strategy for WebView (#4257)

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Task/Issue URL:
https://app.asana.com/0/1174433894299346/1206764056479583/f

### Description
Remove Depreacted Force Dark strategy

### Steps to test this PR

_App in light theme_
- [x] Navigate to sites with dark theme support (reddit.com)
- [x] Verify site displays in light mode
- [x] Navigate to sites without dark theme support (as.com)
- [x] Verify site displays in light mode

_App in dark theme_
- [x] Navigate to sites with dark theme support (reddit.com)
- [x] Verify site displays in dark mode
- [x] Navigate to sites without dark theme support (as.com)
- [x] Verify site displays in light mode

app/src/main/java/com/duckduckgo/app/browser/BrowserTabFragment.kt

@@ -238,8 +238,6 @@ import com.duckduckgo.common.utils.FragmentViewModelFactory
 import com.duckduckgo.common.utils.extensions.html
 import com.duckduckgo.common.utils.extensions.websiteFromGeoLocationsApiOrigin
 import com.duckduckgo.common.utils.plugins.PluginPoint
-import com.duckduckgo.common.utils.webview.enableDarkMode
-import com.duckduckgo.common.utils.webview.enableLightMode
 import com.duckduckgo.di.scopes.FragmentScope
 import com.duckduckgo.downloads.api.DOWNLOAD_SNACKBAR_DELAY
 import com.duckduckgo.downloads.api.DOWNLOAD_SNACKBAR_LENGTH
@@ -2091,7 +2089,6 @@ class BrowserTabFragment :
                 setSupportMultipleWindows(true)
                 disableWebSql(this)
                 setSupportZoom(true)
-                configureDarkThemeSupport(this)
                 if (accessibilitySettingsDataStore.overrideSystemFontSize) {
                     textZoom = accessibilitySettingsDataStore.fontSize.toInt()
                 }
@@ -2313,13 +2310,6 @@ class BrowserTabFragment :
         dialog.show(childFragmentManager, tag)
     }
 
-    private fun configureDarkThemeSupport(webSettings: WebSettings) {
-        when (appTheme.isLightModeEnabled()) {
-            true -> webSettings.enableLightMode()
-            false -> webSettings.enableDarkMode()
-        }
-    }
-
     private fun configureSwipeRefresh() {
         val metrics = resources.displayMetrics
         val distanceToTrigger = (DEFAULT_CIRCLE_TARGET_TIMES_1_5 * metrics.density).toInt()

privacy-dashboard/privacy-dashboard-impl/src/main/java/com/duckduckgo/privacy/dashboard/impl/ui/PrivacyDashboardHybridActivity.kt

@@ -19,7 +19,6 @@ package com.duckduckgo.privacy.dashboard.impl.ui
 import android.annotation.SuppressLint
 import android.os.Bundle
 import android.webkit.WebResourceRequest
-import android.webkit.WebSettings
 import android.webkit.WebView
 import android.webkit.WebViewClient
 import androidx.lifecycle.Lifecycle.State.STARTED
@@ -35,8 +34,6 @@ import com.duckduckgo.browser.api.brokensite.BrokenSiteNav
 import com.duckduckgo.common.ui.DuckDuckGoActivity
 import com.duckduckgo.common.ui.store.AppTheme
 import com.duckduckgo.common.ui.viewbinding.viewBinding
-import com.duckduckgo.common.utils.webview.enableDarkMode
-import com.duckduckgo.common.utils.webview.enableLightMode
 import com.duckduckgo.di.scopes.ActivityScope
 import com.duckduckgo.navigation.api.getActivityParams
 import com.duckduckgo.privacy.dashboard.api.ui.PrivacyDashboardHybridScreen.PrivacyDashboardHybridWithTabIdParam
@@ -152,7 +149,6 @@ class PrivacyDashboardHybridActivity : DuckDuckGoActivity() {
         with(webView.settings) {
             builtInZoomControls = false
             javaScriptEnabled = true
-            configureDarkThemeSupport(this)
         }
 
         webView.webViewClient = object : WebViewClient() {
@@ -181,13 +177,6 @@ class PrivacyDashboardHybridActivity : DuckDuckGoActivity() {
         }
     }
 
-    private fun configureDarkThemeSupport(webSettings: WebSettings) {
-        when (appTheme.isLightModeEnabled()) {
-            true -> webSettings.enableLightMode()
-            false -> webSettings.enableDarkMode()
-        }
-    }
-
     private fun configViewStateObserver() {
         lifecycleScope.launch {
             viewModel.viewState()