[resources] Add experimental getSystemResourceEnvironment function.

components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/FontResources.kt

@@ -44,7 +44,7 @@ expect fun Font(
  */
 @ExperimentalResourceApi
 suspend fun getFontResourceBytes(
-    environment: ResourceEnvironment = getResourceEnvironment(),
+    environment: ResourceEnvironment = getSystemResourceEnvironment(),
     resource: FontResource
 ): ByteArray {
     val resourceItem = resource.getResourceItemByEnvironment(environment)

components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/ImageResources.kt

@@ -118,7 +118,7 @@ private fun svgPainter(resource: DrawableResource): Painter {
  */
 @ExperimentalResourceApi
 suspend fun getDrawableResourceBytes(
-    environment: ResourceEnvironment = getResourceEnvironment(),
+    environment: ResourceEnvironment = getSystemResourceEnvironment(),
     resource: DrawableResource
 ): ByteArray {
     val resourceItem = resource.getResourceItemByEnvironment(environment)

components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/PluralStringResources.kt

@@ -42,8 +42,9 @@ fun pluralStringResource(resource: PluralStringResource, quantity: Int): String
  *
  * @throws IllegalArgumentException If the provided ID or the pluralization is not found in the resource file.
  */
+@OptIn(ExperimentalResourceApi::class)
 suspend fun getPluralString(resource: PluralStringResource, quantity: Int): String =
-    loadPluralString(resource, quantity, DefaultResourceReader, getResourceEnvironment())
+    loadPluralString(resource, quantity, DefaultResourceReader, getSystemResourceEnvironment())
 
 /**
  * Loads a string using the specified string resource.
@@ -110,12 +111,13 @@ fun pluralStringResource(resource: PluralStringResource, quantity: Int, vararg f
  *
  * @throws IllegalArgumentException If the provided ID or the pluralization is not found in the resource file.
  */
+@OptIn(ExperimentalResourceApi::class)
 suspend fun getPluralString(resource: PluralStringResource, quantity: Int, vararg formatArgs: Any): String =
     loadPluralString(
         resource, quantity,
         formatArgs.map { it.toString() },
         DefaultResourceReader,
-        getResourceEnvironment(),
+        getSystemResourceEnvironment(),
     )
 
 /**

components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/ResourceEnvironment.kt

@@ -56,11 +56,15 @@ fun rememberResourceEnvironment(): ResourceEnvironment {
 internal expect fun getSystemEnvironment(): ResourceEnvironment
 
 //the function reference will be overridden for tests
+//@TestOnly
+internal var getResourceEnvironment = ::getSystemEnvironment
+
 /**
- * Provides the resource environment for non-composable access to string resources.
+ * Provides the resource environment for non-composable access to resources.
  * It is an expensive operation! Don't use it in composable functions with no cache!
  */
-internal var getResourceEnvironment = ::getSystemEnvironment
+@ExperimentalResourceApi
+fun getSystemResourceEnvironment(): ResourceEnvironment = getResourceEnvironment()
 
 @OptIn(InternalResourceApi::class)
 internal fun Resource.getResourceItemByEnvironment(environment: ResourceEnvironment): ResourceItem {

components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/StringArrayResources.kt

@@ -45,8 +45,9 @@ fun stringArrayResource(resource: StringArrayResource): List<String> {
  *
  * @throws IllegalStateException if the string array with the given ID is not found.
  */
+@OptIn(ExperimentalResourceApi::class)
 suspend fun getStringArray(resource: StringArrayResource): List<String> =
-    loadStringArray(resource, DefaultResourceReader, getResourceEnvironment())
+    loadStringArray(resource, DefaultResourceReader, getSystemResourceEnvironment())
 
 /**
  * Loads a list of strings using the specified string array resource.

components/resources/library/src/commonMain/kotlin/org/jetbrains/compose/resources/StringResources.kt

@@ -38,8 +38,9 @@ fun stringResource(resource: StringResource): String {
  *
  * @throws IllegalArgumentException If the provided ID is not found in the resource file.
  */
+@OptIn(ExperimentalResourceApi::class)
 suspend fun getString(resource: StringResource): String =
-    loadString(resource, DefaultResourceReader, getResourceEnvironment())
+    loadString(resource, DefaultResourceReader, getSystemResourceEnvironment())
 
 /**
  * Loads a string using the specified string resource.
@@ -91,11 +92,12 @@ fun stringResource(resource: StringResource, vararg formatArgs: Any): String {
  *
  * @throws IllegalArgumentException If the provided ID is not found in the resource file.
  */
+@OptIn(ExperimentalResourceApi::class)
 suspend fun getString(resource: StringResource, vararg formatArgs: Any): String = loadString(
     resource,
     formatArgs.map { it.toString() },
     DefaultResourceReader,
-    getResourceEnvironment()
+    getSystemResourceEnvironment()
 )
 
 /**