Restore toggling of MBEDTLS_CIPHER_MODE_CBC

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 95053fb..deb13b7 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1913,6 +1913,9 @@
     # Disable CBC. Note: When implemented, PSA_WANT_ALG_CBC_MAC will also need to be unset here to fully disable CBC
     scripts/config.py -f $CRYPTO_CONFIG_H unset PSA_WANT_ALG_CBC_NO_PADDING
     scripts/config.py -f $CRYPTO_CONFIG_H unset PSA_WANT_ALG_CBC_PKCS7
+    # Disable CBC-legacy (controlled by MBEDTLS_CIPHER_MODE_CBC plus at least one block cipher (AES, ARIA, Camellia, DES))
+    # Note: The unset below is to be removed for 4.0
+    scripts/config.py unset MBEDTLS_CIPHER_MODE_CBC
     # Disable CBC-EtM (controlled by the same as CBC-legacy plus MBEDTLS_SSL_ENCRYPT_THEN_MAC)
     scripts/config.py unset MBEDTLS_SSL_ENCRYPT_THEN_MAC
     # Enable stream (currently that's just the NULL pseudo-cipher (controlled by MBEDTLS_CIPHER_NULL_CIPHER))
@@ -1973,6 +1976,8 @@
     #Disable TLS 1.3 (as no AEAD)
     scripts/config.py unset MBEDTLS_SSL_PROTO_TLS1_3
     # Enable CBC-legacy (controlled by MBEDTLS_CIPHER_MODE_CBC plus at least one block cipher (AES, ARIA, Camellia, DES))
+    # Note: The set below is to be removed for 4.0
+    scripts/config.py set MBEDTLS_CIPHER_MODE_CBC
     # Note: When implemented, PSA_WANT_ALG_CBC_MAC will also need to be set here to fully enable CBC
     scripts/config.py -f $CRYPTO_CONFIG_H set PSA_WANT_ALG_CBC_NO_PADDING
     scripts/config.py -f $CRYPTO_CONFIG_H set PSA_WANT_ALG_CBC_PKCS7
@@ -2037,6 +2042,8 @@
     #Disable TLS 1.3 (as no AEAD)
     scripts/config.py unset MBEDTLS_SSL_PROTO_TLS1_3
     # Enable CBC-legacy (controlled by MBEDTLS_CIPHER_MODE_CBC plus at least one block cipher (AES, ARIA, Camellia, DES))
+    # Note: The set below is to be removed for 4.0
+    scripts/config.py set MBEDTLS_CIPHER_MODE_CBC
     # Note: When implemented, PSA_WANT_ALG_CBC_MAC will also need to be set here to fully enable CBC
     scripts/config.py -f $CRYPTO_CONFIG_H set PSA_WANT_ALG_CBC_NO_PADDING
     scripts/config.py -f $CRYPTO_CONFIG_H set PSA_WANT_ALG_CBC_PKCS7