fix(react-router): run action handlers for routes with middleware even if no loader is present

[rururux]

fixes #14429

Previously, routes that only defined an action and had middleware could fail to
invoke the action unless at least one loader was present in the matched route tree.
This patch ensures the middleware execution path correctly handles action-only routes by always executing the
action phase even when no loaders are found.

[changeset-bot]

🦋 Changeset detected

Latest commit: c967d24

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

This PR includes changesets to release 11 packages

Name	Type
react-router	Patch
@react-router/architect	Patch
@react-router/cloudflare	Patch
@react-router/dev	Patch
react-router-dom	Patch
@react-router/express	Patch
@react-router/node	Patch
@react-router/serve	Patch
@react-router/fs-routes	Patch
@react-router/remix-routes-option-adapter	Patch
create-react-router	Patch

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