chore: give verbose names to form args "e"

[josefaidt]

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

• It's really useful if your PR references an issue where it is discussed ahead of time. In many cases, features are absent for a reason. For large changes, please create an RFC: https://github.com/sveltejs/rfcs
• This message body should clearly illustrate what problems it solves.
• Ideally, include a test that fails without this PR but passes with it.

This update does not quite change or add any functionality, but aims at improving the readability of the form.ts file from the default create-svelte app. I noticed e was used as the event argument, and then later in the same handler as an error variable. To me this was a bit confusing to read and it does not appear to hold significant value with a shorter variable name. For newcomers this can be off-putting or confusing reading multiple variables with the same name in the same function (despite block scoping)

Tests

• Run the tests with pnpm test and lint the project with pnpm lint and pnpm check

Changesets

• If your PR makes a change that should be noted in one or more packages' changelogs, generate a changeset by running pnpm changeset and following the prompts. All changesets should be patch until SvelteKit 1.0

[changeset-bot]

🦋 Changeset detected

Latest commit: 3549269

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
create-svelte	Patch

Not sure what this means? Click here to learn what changesets are.

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

[Rich-Harris]

thanks 👍