fix(typescript): resolve the shim used for tsc in Typescript v5.7 and up

[kitsune7]

This PR resolves issue #251.

I made the checks for detecting whether or not tscPath is pointed at a shim as resistant to change as I could think to make them (without trying to parse an AST). Because we rely on Typescript's source code, there's always a chance that a future update could break things, but this should be fairly resilient.

I tested this on a local repository and have verified that it fixes the issue when using Typescript v5.7.2. It also maintains backwards compatibility for older Typescript versions that don't use a shim for tsc.

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commit: 8b061e3

[johnsoncodehk]

I made a few modifications to your approach. Thanks for look into this!