infra(ci): use maven wrapper instead of mvnd on Windows to avoid daemon crash

[Duansg]

What

On the Windows leg of the ci workflow, build with ./mvnw.cmd instead of mvnd. mvnd is no longer installed or run on Windows; Linux legs are unchanged.

Why

After #6435 merged, build (17, windows-latest) failed in "Build with Maven":

 java.nio.charset.MalformedInputException: Input length = 1
        at org.mvndaemon.mvnd.client.DaemonDiagnostics.tail(...)

The mvnd daemon (mvnd 1.0.2 / bundled JDK 22) dies mid-build; the client then reads a non-UTF-8 daemon log with the platform charset and throws, masking the real error. It reproduces reliably on Windows (non-UTF-8 default charset) while Linux passes, and the mvnd --version guard can't catch it since the daemon dies during the build, not at startup. Skipping mvnd on Windows removes the path.

Not caused by #6435 — that PR only refactored paths-filter and touched no build command. Pre-existing Windows/mvnd flake.

• You have read the contribution guidelines.
• You submit test cases (unit or integration tests) that back your changes.
• Your local test passed ./mvnw clean install -Dmaven.javadoc.skip=true.