Missing repeating group number validation for nested repeating groups

[lucianoviana]

The repeating group number is currently validated against the actual group content, but this validation is missing when processing nested repeating groups.

For normal groups, the reject reason used is: INCORRECT_NUMINGROUP_COUNT_FOR_REPEATING_GROUP

unit test used as reference: uk.co.real_logic.artio.dictionary.generation.AbstractDecoderGeneratorTest#shouldDecodeNestedRepeatingGroups

[lucianoviana]

Running the test above with the msg below, we get the following decoded RejectReason: REQUIRED_TAG_MISSING

FIX used as input to the test:

public static final String NESTED_GROUP_MESSAGE =
        "8=FIX.4.4\0019=77\00135=0\001115=abc\001116=2\001117=1.1\001127=19700101-00:00:00.001" +
        "\001120=1\001121=1\001122=1\001123=1\001123=1\00110=063\001";

The problem is when the NoNestedGrp is lower than the actual occurrences of NestedGroup

[lucianoviana]

fixed on #520