Vista tc latest

[jvigliotta]

IN DRAFT PENDING NEEDING TO PATCH R4.9 OR NOT. CODE ALREADY MERGED INTO R4.10

Directly related to #5419

Describe your changes:

When options.strategy = 'latest' for a request, we should only hold onto one value... the latest one within the current time bounds. This fix adds logic for processing new telemetry to only take the latest one within the new telemetry and bounds. Also, on ticks, old telemetry is discarded and any future bound telemetry is then checked for latest values.

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Author Checklist

• Changes address original issue?
• Unit tests included and/or updated with changes?
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• Has this been smoke tested?
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Reviewer Checklist

• Changes appear to address issue?
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[jvigliotta]

This was implemented separately.