Various small fixes to support AMMT demo

[reverendbedford]

Minor fixes to support the dash demo.

[Copilot]

Pull Request Overview

This PR introduces several minor fixes to support the AMMT demo. Key changes include:

• Improved handling of the confidence parameter in the TTP prediction method.
• An updated signature for the predict_stress function in TTP with a new parameter to optionally raise errors.
• Modification of the GPR predict_stress method to accept additional keyword arguments.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
pycreep/ttp.py	Updated predict_time logic and expanded predict_stress signature.
pycreep/gpr.py	Altered predict_stress signature to accept extra kwargs.

Comments suppressed due to low confidence (2)

pycreep/ttp.py:256

• Consider adding a comment explaining the rationale behind using np.sign(confidence) and np.abs(confidence) in this calculation, to clarify how negative confidence values are intended to be interpreted.

            h = np.sign(confidence) * scipy.stats.norm.interval(np.abs(confidence))[1]

pycreep/gpr.py:373

• Consider explicitly defining any additional parameters expected in **kwargs to avoid potential ambiguity and to improve API clarity.

    def predict_stress(self, time, temperature, confidence=None, **kwargs):