JsonWire - Improve serialisation of Double NaN and Infinity

[tgd]

Historically JsonWire in some cases would emit 'null' for Double.NaN' and the unquoted strings InfinityforDouble.Infinite`. In the latter case this token was not represented as a JSON string literal in double quotes so would create parse errors when that JSON was re-parsed down the line.

This ticket does the following:

• Maps Double.NaN, Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY to the JSON strings "NaN", "Infinity", "-Infinity"
• Implements the same logic for float

[hft-team-city]

Released in Chronicle-Wire-2.27ea2, BOM-2.27ea11