fix(map): '1 QSO' singular never matched on zh systems

Android plurals have no 'one' category in Chinese (zh plural rules only
contain 'other'), so a single QSO rendered as '1 QSOs' on Chinese-locale
devices. Replace the plurals resource with explicit singular/plural
strings selected in code.

core/presentation/src/main/res/values-zh/strings.xml

@@ -122,10 +122,8 @@
     <string name="map_visibility">能见度：%s</string>
     <!-- Worked-grid QSO dialog -->
     <string name="grid_qso_calls_count">%d 个呼号 · %d 次通联</string>
-    <plurals name="grid_qso_count">
-        <item quantity="one">%d QSO</item>
-        <item quantity="other">%d QSOs</item>
-    </plurals>
+    <string name="grid_qso_count_one">%d QSO</string>
+    <string name="grid_qso_count_many">%d QSOs</string>
     <string name="grid_qso_first">首通</string>
     <string name="grid_qso_no_sat">卫星未知</string>
     <string name="map_visible">日照中</string>

core/presentation/src/main/res/values/strings.xml

@@ -147,10 +147,8 @@
     <string name="map_visibility">Visibility: %s</string>
     <!-- Worked-grid QSO dialog -->
     <string name="grid_qso_calls_count">%d callsigns · %d QSOs</string>
-    <plurals name="grid_qso_count">
-        <item quantity="one">%d QSO</item>
-        <item quantity="other">%d QSOs</item>
-    </plurals>
+    <string name="grid_qso_count_one">%d QSO</string>
+    <string name="grid_qso_count_many">%d QSOs</string>
     <string name="grid_qso_first">First</string>
     <string name="grid_qso_no_sat">satellite unknown</string>
     <string name="map_visible">Visible</string>

feature/map/src/main/java/com/rtbishop/look4sat/feature/map/MapScreen.kt

@@ -62,7 +62,6 @@ import androidx.compose.ui.draw.rotate
 import androidx.compose.ui.draw.scale
 import androidx.compose.ui.graphics.Color as ComposeColor
 import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.res.pluralStringResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
@@ -446,7 +445,10 @@ private fun WorkedGridCallRow(
                 modifier = Modifier.weight(1f)
             )
             Text(
-                text = pluralStringResource(R.plurals.grid_qso_count, callQsos.size, callQsos.size),
+                // Plurals resources don't work for zh (only 'other' matches), so
+                // pick the singular/plural string explicitly.
+                text = if (callQsos.size == 1) stringResource(R.string.grid_qso_count_one, 1)
+                else stringResource(R.string.grid_qso_count_many, callQsos.size),
                 style = MaterialTheme.typography.bodySmall,
                 color = MaterialTheme.colorScheme.onSurfaceVariant,
                 textAlign = androidx.compose.ui.text.style.TextAlign.Center,