[android,settings] fix for *_combined (fastmem, gpu unswizzle) kotlin side only settings being unnecesarily requested to native (#3724)

Fixes jni reporting error when these settings change.
Combined settings are the grouping reference for settings like gpu unswizzle.
As far as i recall, fastmen only uses it coz it has a sub setting in the past.

[ 445.450666] Frontend <Error> main/jni/native_config.cpp:33:getSetting: [Android Native] Could not find setting - gpu_unswizzle_combined
[ 450.054470] Frontend <Error> main/jni/native_config.cpp:33:getSetting: [Android Native] Could not find setting - fastmem_combined

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3724
Reviewed-by: DraVee <chimera@dravee.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: xbzk <xbzk@eden-emu.dev>
Co-committed-by: xbzk <xbzk@eden-emu.dev>

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/GpuUnswizzleSetting.kt

@@ -27,6 +27,20 @@ class GpuUnswizzleSetting(
         override val isSaveable = true
         override val isRuntimeModifiable = true
         override val isSwitchable = true
+        override val pairedSettingKey: String = ""
+        override var global: Boolean
+            get() {
+                return BooleanSetting.GPU_UNSWIZZLE_ENABLED.global &&
+                    IntSetting.GPU_UNSWIZZLE_TEXTURE_SIZE.global &&
+                    IntSetting.GPU_UNSWIZZLE_STREAM_SIZE.global &&
+                    IntSetting.GPU_UNSWIZZLE_CHUNK_SIZE.global
+            }
+            set(value) {
+                BooleanSetting.GPU_UNSWIZZLE_ENABLED.global = value
+                IntSetting.GPU_UNSWIZZLE_TEXTURE_SIZE.global = value
+                IntSetting.GPU_UNSWIZZLE_STREAM_SIZE.global = value
+                IntSetting.GPU_UNSWIZZLE_CHUNK_SIZE.global = value
+            }
         override fun getValueAsString(needsGlobal: Boolean): String = "combined"
         override fun reset() {
             BooleanSetting.GPU_UNSWIZZLE_ENABLED.reset()
@@ -72,4 +86,4 @@ class GpuUnswizzleSetting(
         IntSetting.GPU_UNSWIZZLE_CHUNK_SIZE.setInt(value)
 
     fun reset() = setting.reset()
-}
+}

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/view/SettingsItem.kt

@@ -989,6 +989,7 @@ abstract class SettingsItem(
                 override val isRuntimeModifiable: Boolean = false
                 override val defaultValue: Boolean = true
                 override val isSwitchable: Boolean = true
+                override val pairedSettingKey: String = ""
                 override var global: Boolean
                     get() {
                         return BooleanSetting.FASTMEM.global &&