ui: restore search focus when returning

Keep the query populated and put the cursor back at the end of the search field when the screen is restored.

app/src/main/kotlin/com/subtracks/ui/components/SearchField.kt

@@ -23,7 +23,6 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -56,13 +55,7 @@ fun SearchField(
             textFieldValue = TextFieldValue(value, selection = TextRange(value.length))
         }
     }
-    var focusRequested by rememberSaveable { mutableStateOf(false) }
+    LaunchedEffect(Unit) { focusRequester.requestFocus() }
-    LaunchedEffect(Unit) {
-        if (!focusRequested) {
-            focusRequester.requestFocus()
-            focusRequested = true
-        }
-    }
     Surface(
         shape = RoundedCornerShape(8.dp),
         color = MaterialTheme.colorScheme.surfaceContainerHigh,

app/src/test/kotlin/com/subtracks/ui/search/SearchScreenTest.kt

@@ -7,7 +7,6 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.test.assertIsDisplayed
 import androidx.compose.ui.test.assertIsFocused
-import androidx.compose.ui.test.assertIsNotFocused
 import androidx.compose.ui.test.hasSetTextAction
 import androidx.compose.ui.test.junit4.StateRestorationTester
 import androidx.compose.ui.test.junit4.v2.createAndroidComposeRule
@@ -124,7 +123,7 @@ class SearchScreenTest {
     }
 
     @Test
-    fun restoringTheScreenDoesNotStealFocus() {
+    fun restoringTheScreenKeepsFocusOnTheQuery() {
         val restorationTester = StateRestorationTester(composeRule)
         restorationTester.setContent {
             SubtracksTheme {
@@ -135,7 +134,7 @@ class SearchScreenTest {
         composeRule.onNode(hasSetTextAction()).assertIsFocused()
         restorationTester.emulateSavedInstanceStateRestore()
 
-        composeRule.onNode(hasSetTextAction()).assertIsNotFocused()
+        composeRule.onNode(hasSetTextAction()).assertIsFocused()
     }
 
     @Test