[5.0.2] Fix | Addressing failure on providing correct error message when symmetric key decryption fails using Always Encrypted. (#1977)

Author: lcheunglci

Diff for: src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/TdsParser.cs

@@ -6024,6 +6024,13 @@ internal bool TryReadSqlValue(SqlBuffer value, SqlMetaDataPriv md, int length, T
                         }
                         catch (Exception e)
                         {
+                            if (stateObj is not null)
+                            {
+                                // call to decrypt column keys has failed. The data wont be decrypted.
+                                // Not setting the value to false, forces the driver to look for column value.
+                                // Packet received from Key Vault will throws invalid token header.
+                                stateObj.HasPendingData = false;
+                            }
                             throw SQL.ColumnDecryptionFailed(columnName, null, e);
                         }
                     }

Diff for: src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/TdsParser.cs

@@ -6828,6 +6828,13 @@ internal bool TryReadSqlValue(SqlBuffer value,
                         }
                         catch (Exception e)
                         {
+                            if (stateObj is not null)
+                            {
+                                // call to decrypt column keys has failed. The data wont be decrypted.
+                                // Not setting the value to false, forces the driver to look for column value.
+                                // Packet received from Key Vault will throws invalid token header.
+                                stateObj._pendingData = false;
+                            }
                             throw SQL.ColumnDecryptionFailed(columnName, null, e);
                         }
                     }