build fails when webpack entry is empty

[xinyuehtx]

Describe the bug

Bug description

• For remote App, I set webpack entry as an empty object
• the build will failed for no matched module factory for EntryDependency

Bug Reason

• For webpack EntryOptionPlugin, when entry is empty, EntryPlugin will not be applied. So normalModuleFactory will not be bound for EntryDependency.
• In ContainerEntryModule, an EntryDependency is used for building runtime entry.

Reproduction

https://github.com/xinyuehtx/module-federation-error

Used Package Manager

pnpm

System Info

System:
    OS: macOS 15.5
    CPU: (11) arm64 Apple M3 Pro
    Memory: 208.41 MB / 36.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.16.0 - ~/.nvm/versions/node/v20.16.0/bin/node
    npm: 10.8.1 - ~/.nvm/versions/node/v20.16.0/bin/npm
    pnpm: 9.15.4 - ~/.nvm/versions/node/v20.16.0/bin/pnpm
  Browsers:
    Chrome: 138.0.7204.169
    Safari: 18.5

Validations

• Read the docs.
• Read the common issues list.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a Module federation issue and not a framework-specific issue.
• The provided reproduction is a minimal reproducible example of the bug.