fix: update remoteEntryChunk code to handle base path correctly when …

[Skywang16]

…Vite config is present

Description

The issue addressed is Duplicate assetsDir in _federation_expose #657.

Before accessing viteConfigResolved.config.base, the code now checks if viteConfigResolved.config.base is configured. If it is, it concatenates it with assetsDir; otherwise, a fallback path (./${slashPath}) is used instead.

Additional context

This concatenation error caused incorrect paths in the generated remoteEntry file, leading to runtime issues in production builds.
The dynamicLoadingCss function now synchronizes the base parameter provided by Vite configuration, ensuring correct path resolution for dynamically loaded CSS files.

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[ruleeeer]

Thank you, I will release a version