fix(javascript): prevent import.meta.url replacement in web target

[MIreland]

Description

This PR fixes an issue where import.meta.url was unconditionally replaced by the local file path during the build, causing file:/// URLs to appear in web builds.

Fix

Modified ImportMetaPlugin to check if the target environment supports document. If it does (web target), import.meta.url is preserved in the output.

Verification

Added a new test case tests/rspack-test/configCases/parsing/import-meta-url-web which asserts that import.meta.url is not replaced by a file:// URL when targeting web.

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[Copilot]

Pull request overview

This PR fixes an issue where import.meta.url was incorrectly replaced with a file:// URL during the build process for web targets. The fix ensures that when targeting web environments (where document is supported), import.meta.url is preserved in the output, allowing the browser to resolve it to the actual script URL at runtime.

Key Changes:

• Modified ImportMetaPlugin to check target environment capabilities before replacing import.meta.url
• Added test case to verify import.meta.url preservation in web targets

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
crates/rspack_plugin_javascript/src/parser_plugin/import_meta_plugin.rs	Updated evaluate_identifier and member methods to conditionally preserve import.meta.url based on whether the target supports document
tests/rspack-test/configCases/parsing/import-meta-url-web/rspack.config.js	Test configuration targeting web environment
tests/rspack-test/configCases/parsing/import-meta-url-web/index.js	Test assertion verifying import.meta.url is not a file path in web builds

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