pySCG: add EXPECTED_TIMEOUT markers to CWE-390 files

Mark CWE-390 files with EXPECTED_TIMEOUT to skip timeout tests.
These files intentionally contain infinite loops/blocking operations
for educational purposes as documented in KNOWN_ISSUES.md.

Signed-off-by: tommcd <[email protected]>

Author: tommcd

docs/Secure-Coding-Guide-for-Python/CWE-703/CWE-390/compliant01.py

@@ -1,6 +1,7 @@
 # SPDX-FileCopyrightText: OpenSSF project contributors
 # SPDX-License-Identifier: MIT
 """ Compliant Code Example """
+# EXPECTED_TIMEOUT: intentional blocking operation for educational purposes
 from time import sleep
 
 

docs/Secure-Coding-Guide-for-Python/CWE-703/CWE-390/noncompliant01.py

@@ -1,6 +1,7 @@
 # SPDX-FileCopyrightText: OpenSSF project contributors
 # SPDX-License-Identifier: MIT
 """ Non-compliant Code Example """
+# EXPECTED_TIMEOUT: intentional infinite loop for educational purposes
 
 from time import sleep