Pass PLATFORM_VERSION to Soong

Soong needs PLATFORM_VERSION to pass as --version-name when building
framework-res.apk.

Bug: 78324052
Test: aapt dump badging $OUT/system/framework/framework-res.apk  | grep -i version
Change-Id: If47839182a1dd7c7a768b1253dd8b575d777ca7e
diff --git a/core/soong_config.mk b/core/soong_config.mk
index 0b99514..f8cb2fb 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -45,6 +45,7 @@
 $(call add_json_str,  BuildId,                           $(BUILD_ID))
 $(call add_json_str,  BuildNumberFromFile,               $$$(BUILD_NUMBER_FROM_FILE))
 
+$(call add_json_str,  Platform_version_name,             $(PLATFORM_VERSION))
 $(call add_json_val,  Platform_sdk_version,              $(PLATFORM_SDK_VERSION))
 $(call add_json_str,  Platform_sdk_codename,             $(PLATFORM_VERSION_CODENAME))
 $(call add_json_bool, Platform_sdk_final,                $(filter REL,$(PLATFORM_VERSION_CODENAME)))