fix: allow sync return from wrapScriptExecution and wrapNetworkRequest hooks

[mrazauskas]

What's the problem this PR addresses?

Currently the typings of wrapScriptExecution and wrapNetworkRequest hooks only allow to return a Promise. There is no harm to allow a sync return, because the return will be anyways awaited at the runtime. A sync function can be awaited and it works as expected.

How did you fix it?

Updated the typings to allow sync returns.

I marked this change as a patch, because this is only an issue with typings. Might be I missed something, but it looks like all works fine at the runtime.

Checklist

• I have read the Contributing Guide.

• I have set the packages that need to be released for my changes to be effective.

• I will check that all automated PR checks pass before the PR gets reviewed.

[mrazauskas]

Sidenotes:

• bumped into this problem while putting together a plugin that hides the change.log file (another workaround for [Feature] Do not always include the changelog.* files in a package #6793)
• strangely I can’t find a type which ensures that the exported plugin object has name and factory(). The Hooks type is very useful. The Plugin type is the return type of the factory(). But how should I type the whole exported thing? Hm.. What do I miss?