Fix #5266: Call setUpDrawer( ) directly if binding already initialized (

#5276)

<!-- READ ME FIRST: Please fill in the explanation section below and
check off every point from the Essential Checklist! -->
## Explanation
<!--
- Explain what your PR does. If this PR fixes an existing bug, please
include
- "Fixes #bugnum:" in the explanation so that GitHub can auto-close the
issue
  - when this PR is merged.
  -->
Fixes #5266

This is happening because `setUpDrawer()` is not called when we go back
to a particular fragment/activity. `setUpDrawer()` is now called from
`handleCreateView()` which is called only when the fragment/activity is
created. This is fixed by calling `setUpDrawer()` directly when calling
via `onRestart()`.

|Before|After|
|--|--|
|<video
src="https://github.com/oppia/oppia-android/assets/84731134/6cf0743d-e615-4950-a3fa-4a31c147099a"
/>|<video
src="https://github.com/oppia/oppia-android/assets/84731134/42c4a7c8-47dd-44b2-817d-2f2ee4069589"
/>|



## Essential Checklist
<!-- Please tick the relevant boxes by putting an "x" in them. -->
- [x] The PR title and explanation each start with "Fix #bugnum: " (If
this PR fixes part of an issue, prefix the title with "Fix part of
#bugnum: ...".)
- [x] Any changes to
[scripts/assets](https://github.com/oppia/oppia-android/tree/develop/scripts/assets)
files have their rationale included in the PR explanation.
- [x] The PR follows the [style
guide](https://github.com/oppia/oppia-android/wiki/Coding-style-guide).
- [x] The PR does not contain any unnecessary code changes from Android
Studio
([reference](https://github.com/oppia/oppia-android/wiki/Guidance-on-submitting-a-PR#undo-unnecessary-changes)).
- [x] The PR is made from a branch that's **not** called "develop" and
is up-to-date with "develop".
- [x] The PR is **assigned** to the appropriate reviewers
([reference](https://github.com/oppia/oppia-android/wiki/Guidance-on-submitting-a-PR#clarification-regarding-assignees-and-reviewers-section)).

## For UI-specific PRs only
<!-- Delete these section if this PR does not include UI-related
changes. -->
If your PR includes UI-related changes, then:
- Add screenshots for portrait/landscape for both a tablet & phone of
the before & after UI changes
- For the screenshots above, include both English and pseudo-localized
(RTL) screenshots (see [RTL
guide](https://github.com/oppia/oppia-android/wiki/RTL-Guidelines))
- Add a video showing the full UX flow with a screen reader enabled (see
[accessibility
guide](https://github.com/oppia/oppia-android/wiki/Accessibility-A11y-Guide))
- For PRs introducing new UI elements or color changes, both light and
dark mode screenshots must be included
- Add a screenshot demonstrating that you ran affected Espresso tests
locally & that they're passing

app/src/main/java/org/oppia/android/app/drawer/NavigationDrawerFragmentPresenter.kt

@@ -374,6 +374,21 @@ class NavigationDrawerFragmentPresenter @Inject constructor(
     this.drawerLayout = drawerLayout
     this.toolbar = toolbar
     this.menuItemId = menuItemId
+
+    /**
+     * [setUpDrawer] is called directly if binding is already initialized.
+     * Otherwise, [setUpDrawer] is called from [handleCreateView].
+     *
+     * Note: [binding] is already initialized when [initializeDrawer] is called via [onRestart]
+     * and [handleCreateView] will not be called in that case.
+     */
+    if (this::binding.isInitialized) {
+      setUpDrawer(
+        this.drawerLayout,
+        this.toolbar,
+        this.menuItemId
+      )
+    }
   }
 
   /**