PM-27703: Update Authenticator navigation (#6109)

ui/src/main/kotlin/com/bitwarden/ui/platform/base/util/NavControllerExtensions.kt

@@ -0,0 +1,42 @@
+package com.bitwarden.ui.platform.base.util
+
+import androidx.navigation.NavController
+import androidx.navigation.NavGraph.Companion.findStartDestination
+import androidx.navigation.NavOptions
+import androidx.navigation.navOptions
+import com.bitwarden.ui.platform.components.navigation.model.NavigationItem
+import com.bitwarden.ui.platform.util.toObjectNavigationRoute
+
+/**
+ * A helper function to determine how to navigate to a specified [NavigationItem].
+ *
+ * This function intelligently handles navigation based on the current destination:
+ * - If already at the target start destination, no action is taken.
+ * - If in the correct graph but not at start, pops back to start destination of the graph.
+ * - Otherwise, navigates to the target graph with appropriate [NavOptions].
+ *
+ * @param target The [NavigationItem] representing the desired navigation target
+ */
+fun NavController.navigateToTabOrRoot(target: NavigationItem) {
+    if (target.startDestinationRoute.toObjectNavigationRoute() == currentDestination?.route) {
+        // We are at the start destination already, so nothing to do.
+        return
+    } else if (target.graphRoute.toObjectNavigationRoute() == currentDestination?.parent?.route) {
+        // We are not at the start destination but we are in the correct graph,
+        // so lets pop up to the start destination.
+        popBackStack(route = target.startDestinationRoute, inclusive = false)
+        return
+    } else {
+        // We are not in correct graph at all, so navigate there.
+        navigate(
+            route = target.graphRoute,
+            navOptions = navOptions {
+                popUpTo(id = graph.findStartDestination().id) {
+                    saveState = true
+                }
+                launchSingleTop = true
+                restoreState = true
+            },
+        )
+    }
+}

ui/src/main/res/values-night/values.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="dialogDimBackgroundAmount">0.75</dimen>
+</resources>

ui/src/main/res/values/values.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="dialogDimBackgroundAmount">0.55</dimen>
+</resources>