[heft] typescript plugin does not work with Typescript 5.6.2

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Summary

Just attempted to upgrade to Typescript v5.6.2
Unfortunately something has changed in the typescript internals and now the heft-typescript-plugin crashes when attempting to do a build with the error builderProgram.getState is not a function

Repro steps

1. Install latest Heft
2. Install latest heft-typescript-plugin
3. Configure a typescript build phase
4. Run heft build

Expected result: Program compiles normally

Actual result: Get a crash builderPrograms.getState is not a function (not sure how to get heft to give me a stacktrace)

Details

Standard questions

Please answer these questions to help us investigate your issue more quickly:

Question	Answer
@rushstack/heft version?	0.66.18 / @rushstack/heft-typescript-plugin 0.5.0
Operating system?	Linux
Would you consider contributing a PR?	No
Node.js version (node -v)?	v20.15.1