Update TinyBDD.Xunit to 0.19.2 with source generator disabled (#101)

* Initial plan

* Plan: Fix TinyBDD 0.19.2 breaking changes

Co-authored-by: JerrettDavis <2610199+JerrettDavis@users.noreply.github.com>

* Revert TinyBDD.Xunit from 0.19.2 to 0.13.0 due to source generator issues

Co-authored-by: JerrettDavis <2610199+JerrettDavis@users.noreply.github.com>

* Update to TinyBDD 0.19.2 with source generator disabled

Co-authored-by: JerrettDavis <2610199+JerrettDavis@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: JerrettDavis <2610199+JerrettDavis@users.noreply.github.com>

Author: Copilot