Fixing Settings sticky header text overlapping with menu items (#928)

## Description
- Adding a background for the Settings stickyHeader. This helps with
visibility and prevents overlap with the menu items when scrolling.
### Related issues
In the Settings screen, the header can overlap the text of the menu
items when scrolling down. This is a minor UI bug only and does not
affect functionality at all, but the fix seemed easy and harmless so I
figured I'd give it a go.

### Testing
Tested manually on TCL model 50S434 running Android TV. Tested manually
using AVD emulation on Television (1080p) and Television (4K) preset
devices. Reproduced the problem on all 3 devices and confirmed that my
fix works across all.

## Screenshots
Before:
<img width="1920" height="1080" alt="before-settings-fix"
src="https://github.com/user-attachments/assets/15f9916d-2583-4dc4-8302-cb1f3a395b1a"
/>
After:
<img width="1920" height="1080" alt="after-settings-fix"
src="https://github.com/user-attachments/assets/3f8781aa-7063-4eb4-bf4a-95ff34b9b1a1"
/>


## AI or LLM usage
None

---------

Co-authored-by: Ray <154766448+damontecres@users.noreply.github.com>

app/src/main/java/com/github/damontecres/wholphin/ui/preferences/PreferencesContent.kt

@@ -11,8 +11,10 @@ import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.interaction.collectIsFocusedAsState
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
@@ -166,14 +168,9 @@ fun PreferencesContent(
         LaunchedEffect(Unit) {
             focusRequester.tryRequestFocus()
         }
-        LazyColumn(
-            state = state,
-            horizontalAlignment = Alignment.Start,
-            verticalArrangement = Arrangement.spacedBy(0.dp),
-            contentPadding = PaddingValues(16.dp),
+        Column(
             modifier = Modifier.background(MaterialTheme.colorScheme.surfaceColorAtElevation(1.dp)),
         ) {
-            stickyHeader {
             Text(
                 text = stringResource(screenTitle),
                 style = MaterialTheme.typography.headlineSmall,
@@ -184,7 +181,13 @@ fun PreferencesContent(
                         .fillMaxWidth()
                         .padding(vertical = 8.dp),
             )
-            }
+            LazyColumn(
+                state = state,
+                horizontalAlignment = Alignment.Start,
+                verticalArrangement = Arrangement.spacedBy(0.dp),
+                contentPadding = PaddingValues(16.dp),
+                modifier = Modifier.fillMaxSize(),
+            ) {
                 if (UpdateChecker.ACTIVE &&
                     preferenceScreenOption == PreferenceScreenOption.BASIC &&
                     preferences.autoCheckForUpdates &&
@@ -474,6 +477,7 @@ fun PreferencesContent(
                     }
                 }
             }
+        }
         if (showPinFlow && currentUser != null) {
             currentUser?.let { user ->
                 SetPinFlow(