chore: use tinyexec

[sacrosanctic]

Closes #

Description

Checklist

• Update snapshots (if applicable)
• Add a changeset (if applicable)
• Allow maintainers to edit this PR
• I care about what I'm doing, no matter the tool I use (Notepad, Sublime, VSCode, AI...)

[pkg-svelte-dev]

Install the latest version of sv from 75416e3:

pnx https://pkg.svelte.dev/sv/c/75416e3dd697cf83282a80ca30e4bdc915ffb027 create

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/cli/pr/1213

Note

This PR is from a fork. A maintainer must approve approve each commit before it can be built and installed.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 75416e3

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[sacrosanctic]

Not sure if these are supposed to throw.

[sacrosanctic]

I just learned that execsync still throws even when it is false if the command itself is invalid...

[manuel3108]

Whats the state of the open comments? Should / will they be handled here or should we proceed with this for the time being?

[sacrosanctic]

The 2 open comments are resolved. I added some comments for context.