fix(types): mark hmr update internal types optional

[bluwy]

Description

The HMR update type can be manually emitted today like https://github.com/histoire-dev/histoire/blob/bc08dec376faa9f72335f6fa4c54283a0233a93d/packages/histoire/src/node/server.ts#L102, which broke types downstream. Marking them as optional like before for now. (explicitImportRequired was already optional before but I made it required in #15118

Currently these internal types are only used at

vite/packages/vite/src/client/client.ts

Lines 142 to 165 in fdc142c

	async function importUpdatedModule({
	acceptedPath,
	timestamp,
	explicitImportRequired,
	isWithinCircularImport,
	}) {
	const [acceptedPathWithoutQuery, query] = acceptedPath.split(`?`)
	const importPromise = import(
	/* @vite-ignore */
	base +
	acceptedPathWithoutQuery.slice(1) +
	`?${explicitImportRequired ? 'import&' : ''}t=${timestamp}${
	query ? `&${query}` : ''
	}`
	)
	if (isWithinCircularImport) {
	importPromise.catch(() => {
	console.info(
	`[hmr] ${acceptedPath} failed to apply HMR as it's within a circular import. Reloading page to reset the execution order. ` +
	`To debug and break the circular import, you can run \`vite --debug hmr\` to log the circular dependency path if a file change triggered it.`,
	)
	pageReload()
	})
	}

Additional context

Thanks @Akryum for spotting this.

---

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines, especially the Pull Request Guidelines.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Update the corresponding documentation if needed.
• Ideally, include relevant tests that fail without this PR but pass with it.

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[patak-dev]

/ecosystem-ci run histoire

[vite-ecosystem-ci]

📝 Ran ecosystem CI on d52d250: Open

suite	result	latest scheduled
histoire	✅ success	❌ failure