- installs React v18 instead of latest in tests
- removes Next.js v15 references from lockfile
- installs "current" native SWC binaries instead of latest

> [!NOTE]
> This is a backport of #73732 for Next.js 14.

When using dependencies in Middleware that make use of dynamic code
evaluation, Next.js emits a build error because this is not supported in
the Edge runtime.

In rare cases, when the code can not be reached at runtime and can't be
removed by tree-shaking, users might opt in to using the
`unstable_allowDynamic` config.

When combined with pnpm, the provided glob patterns as documented at
https://nextjs.org/docs/messages/edge-dynamic-code-evaluation#possible-ways-to-fix-it
did not match correctly because of pnpm's use of the `.pnpm` directory.

To fix the pattern matching, we need to provide the `dot` option to
[picomatch](https://github.com/micromatch/picomatch), which enables
dotfile matching.

_Side note: Ideally we would detect dynamic code evaluation after tree
shaking, to reduce the number of cases where users need to revert to
using `unstable_allowDynamic`._

fixes #51401

Backport #73923 to 14.x

…73927)

Backport #73925 to 14.x

Updates React from 14898b6a9 to 178c267a4e.

### React upstream changes

- facebook/react#31842
- facebook/react#31841