Support ts-node -p 123 equivalent to -pe 123

[cspotcode]

Pending https://discord.com/channels/508357248330760243/933130253692436560/1105333478138060862

Even if I don't keep this behavior, should at least merge the improved test-ability.

Related to bullet point on #1505

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.36%. Comparing base (7af5c48) to head (8035ef5).
⚠️ Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
src/bin.ts	87.50%	1 Missing and 1 partial ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
src/bin.ts	90.00% <87.50%> (-0.35%)	⬇️

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