fix: Search bar not closing on pressing android's back button (#2460)

* Fix bug where keyboard does not hide when search is cancelled

* Fix bug where search did not close on nav back press

Co-authored-by: Amartya Mondal <[email protected]>

Author: shashwatjolly

app/src/main/java/org/fossasia/susi/ai/skills/SkillsActivity.kt

@@ -294,6 +294,13 @@ class SkillsActivity : AppCompatActivity(), SkillFragmentCallback {
             }
             edtSearch?.requestFocus()
 
+            edtSearch?.setOnKeyListener { v, keyCode, event ->
+                if (keyCode == KeyEvent.KEYCODE_BACK) {
+                    onBackPressed()
+                }
+                true
+            }
+
             // open the keyboard focused in the edtSearch
             val inputMethodManager = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
             inputMethodManager.showSoftInput(edtSearch, InputMethodManager.SHOW_IMPLICIT)