X509NameAttribute::ValueAsString: Decode TeletexString as Latin1.

net/data/parse_certificate_unittest/subject_t61string_actual.pem

+Test certificate for TeletexString handling.
+
+The certificate data can be updated/regenerated with the
+net/data/parse_certificate_unittest/regenerate_pem_from_ascii.py script.
+
+#-----BEGIN SUBJECT-----
+    SEQUENCE {
+      SET {
+        SEQUENCE {
+          # countryName
+          OBJECT_IDENTIFIER { 2.5.4.6 }
+          PrintableString { "AU" }
+        }
+      }
+      SET {
+        SEQUENCE {
+          # stateOrProvinceName
+          OBJECT_IDENTIFIER { 2.5.4.8 }
+          UTF8String { "Some-State" }
+        }
+      }
+      SET {
+        SEQUENCE {
+          # organizationName
+          OBJECT_IDENTIFIER { 2.5.4.10 }
+          # If anyone actually implemented real TeletexString processing, this
+          # would probably be a valid TeletexString representing a Japanese
+          # character.
+          #
+          # switch to JIS X 0208-1978 (2-bytes per char) (See
+          # https://en.wikipedia.org/wiki/ISO/IEC_2022):
+          # ESC $ @
+          #
+          # Character 'あ' (See https://www.itscj.ipsj.or.jp/iso-ir/042.pdf):
+          # 100100 100010
+          T61String { `1B24402422` }
+        }
+      }
+    }
+#-----END SUBJECT-----
+
+-----BEGIN CERTIFICATE-----
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
+-----END CERTIFICATE-----: