Include column is_soong_module when loading installed file list

In soong-only build all installed files should be built by soong so this
field is needed when validating if there is any metadata associating
with an installed file.

Bug: 398039178
Test: presubmits
Test: build/soong/tests/sbom_test.sh
Change-Id: I185edf01dd89489d13bf31e82ec5cffcf29e5546
diff --git a/tools/sbom/gen_sbom.py b/tools/sbom/gen_sbom.py
index 77bccbb..e875ddb 100644
--- a/tools/sbom/gen_sbom.py
+++ b/tools/sbom/gen_sbom.py
@@ -415,11 +415,13 @@
 def installed_file_has_metadata(installed_file_metadata, report):
   installed_file = installed_file_metadata['installed_file']
   module_path = installed_file_metadata['module_path']
+  is_soong_module = installed_file_metadata['is_soong_module']
   product_copy_files = installed_file_metadata['product_copy_files']
   kernel_module_copy_files = installed_file_metadata['kernel_module_copy_files']
   is_platform_generated = installed_file_metadata['is_platform_generated']
 
   if (not module_path and
+      not is_soong_module and
       not product_copy_files and
       not kernel_module_copy_files and
       not is_platform_generated and