Fix #4739 Talkback does not read the expected text

app/src/main/java/org/oppia/android/app/profile/PinPasswordActivityPresenter.kt

@@ -55,6 +55,14 @@ class PinPasswordActivityPresenter @Inject constructor(
       (activity as PinPasswordActivity).finish()
     }
 
+    binding.apply {
+      pinPasswordInputPinEditText.setOnClickListener {
+        pinPasswordInputPinEditText.isFocusable = true
+        pinPasswordInputPinEditText.isFocusableInTouchMode = true
+        pinPasswordInputPinEditText.requestFocus()
+      }
+    }
+
     binding.showPin.setOnClickListener {
       pinViewModel.showPassword.set(!pinViewModel.showPassword.get()!!)
       if (!pinViewModel.showPassword.get()!!) {

app/src/main/res/layout/pin_password_activity.xml

@@ -123,7 +123,9 @@
                 android:imeOptions="actionNext"
                 android:inputType="numberPassword"
                 android:maxLength="@{viewModel.profile.pin.length()}"
-                android:textSize="14sp" />
+                android:textSize="14sp"
+                android:focusable="false"
+                android:focusableInTouchMode="true"/>
             </com.google.android.material.textfield.TextInputLayout>
 
             <TextView