fix: spyOn can be worked with imported properties

[9aoy]

Summary

fix: spyOn can be worked with imported properties.

update rspack define_property_getters template, sets the object configurable so that imported properties can be spied,

Related Links

fix: #578

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[Copilot]

Pull Request Overview

This PR fixes an issue where spyOn could not work with imported properties by making them configurable. The fix modifies the Rspack runtime template to add the configurable: true property to imported module properties, enabling test frameworks to spy on and mock imported functions.

Key Changes:

• Modified the define_property_getters runtime module to make imported properties configurable
• Added comprehensive test coverage for spying on both static and dynamic imports

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
packages/core/src/core/plugins/mockRuntime.ts	Added string replacement logic to inject configurable: true into the define_property_getters runtime template
e2e/spy/spyOn.test.ts	Added two new test cases covering static import spying and dynamic import spying scenarios
e2e/spy/fixtures/util.ts	Created new test fixture file with a simple exported function for testing

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