test: Rewrite TransformInterpolationTests to remove its random failures - up-port

[NoelStephensUnity]

Purpose of this PR

Up-port of #4147

Overhauling this test since it has been problematic for a long time. The root cause is that the values applied ended forming a discontinuously-linear/saw-tooth motion which makes it very problematic to distinguish a fault from an actual valid interpolation.

The actual solution is to use a smoothed sinusoidal wave that forms a continuous motion that is discernable between a fault and the motion being applied.

Jira ticket

(Link ticket here)

Changelog

NA

Documentation

• No documentation changes or additions were necessary.

Testing & QA (How your changes can be verified during release Playtest)

Functional Testing

Manual testing :

• Manual testing done

Automated tests:

• Covered by the adjustments made to TransformInterpolationTest.
• Covered by new automated tests

Does the change require QA team to:

• Review automated tests?
• Execute manual tests?
• Provide feedback about the PR?

If any boxes above are checked the QA team will be automatically added as a PR reviewer.

Up-port

None

Backports

None.

[u-pr]

💡 Harness Review

The new continuous-motion harness improves the signal for ordinary position updates, but its local/world transition path does not exercise interpolation as intended.

_{Reviewed commit 7422524}

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