No issue: cache SearchDialogFragment.InlineAutocompleteEditText.

Assuming the InlineAutocompleteEditText is not being recreated (and I
did not verify this), it's unnecessary to traverse the view hierarchy
to find it more than once so this patch removes the unnecessary
traversals.

app/src/main/java/org/mozilla/fenix/search/SearchDialogFragment.kt

@@ -83,6 +83,7 @@ class SearchDialogFragment : AppCompatDialogFragment(), UserInteractionHandler {
     private lateinit var interactor: SearchDialogInteractor
     private lateinit var store: SearchDialogFragmentStore
     private lateinit var toolbarView: ToolbarView
+    private lateinit var inlineAutocompleteEditText: InlineAutocompleteEditText
     private lateinit var awesomeBarView: AwesomeBarView
 
     private val qrFeature = ViewBoundFeatureWrapper<QrFeature>()
@@ -176,9 +177,7 @@ class SearchDialogFragment : AppCompatDialogFragment(), UserInteractionHandler {
                 },
                 focusToolbar = { toolbarView.view.edit.focus() },
                 clearToolbar = {
-                    toolbarView.view
-                        .findViewById<InlineAutocompleteEditText>(R.id.mozac_browser_toolbar_edit_url_view)
-                        ?.setText("")
+                    inlineAutocompleteEditText.setText("")
                 }
             )
         )
@@ -194,7 +193,9 @@ class SearchDialogFragment : AppCompatDialogFragment(), UserInteractionHandler {
             binding.toolbar,
             requireComponents.core.engine,
             fromHomeFragment
-        )
+        ).also {
+            inlineAutocompleteEditText = it.view.findViewById(R.id.mozac_browser_toolbar_edit_url_view)
+        }
 
         val awesomeBar = binding.awesomeBar
 
@@ -212,9 +213,7 @@ class SearchDialogFragment : AppCompatDialogFragment(), UserInteractionHandler {
 
         awesomeBarView.view.setOnEditSuggestionListener(toolbarView.view::setSearchTerms)
 
-        val urlView = toolbarView.view
-            .findViewById<InlineAutocompleteEditText>(R.id.mozac_browser_toolbar_edit_url_view)
-        urlView?.importantForAccessibility = View.IMPORTANT_FOR_ACCESSIBILITY_NO
+        inlineAutocompleteEditText.importantForAccessibility = View.IMPORTANT_FOR_ACCESSIBILITY_NO
 
         requireComponents.core.engine.speculativeCreateSession(isPrivate)
 
@@ -666,14 +665,11 @@ class SearchDialogFragment : AppCompatDialogFragment(), UserInteractionHandler {
     }
 
     private fun updateToolbarContentDescription(source: SearchEngineSource) {
-        val urlView = toolbarView.view
-            .findViewById<InlineAutocompleteEditText>(R.id.mozac_browser_toolbar_edit_url_view)
-
         source.searchEngine?.let { engine ->
-            toolbarView.view.contentDescription = engine.name + ", " + urlView.hint
+            toolbarView.view.contentDescription = engine.name + ", " + inlineAutocompleteEditText.hint
         }
 
-        urlView?.importantForAccessibility = View.IMPORTANT_FOR_ACCESSIBILITY_NO
+        inlineAutocompleteEditText.importantForAccessibility = View.IMPORTANT_FOR_ACCESSIBILITY_NO
     }
 
     private fun updateSearchShortcutsIcon(