Incorrectly documented default for derefSymlinks

[Bluenix2]

Expected Behavior

According to the documentation for derefSymlinks, the default value is true:

packager/src/types.ts

Lines 356 to 362 in 34f8857

	/**
	* Whether symlinks should be dereferenced during the copying of the application source.
	* Defaults to `true`.
	*
	* **Note:** `derefSymlinks` will have no effect if the {@link prebuiltAsar} option is set.
	*/
	derefSymlinks?: boolean;

Actual Behavior

However, as we can see by the call to fs-extra, there is no default value used which means that we rely on their default value:

packager/src/platform.ts

Lines 168 to 171 in 34f8857

	await fs.copy(this.opts.dir, this.originalResourcesAppDir, {
	filter: userPathFilter(this.opts),
	dereference: this.opts.derefSymlinks,
	});

As a result, the actual default value becomes false:

dereference <boolean>: dereference symlinks, default is false.

https://github.com/jprichardson/node-fs-extra/blob/master/docs/copy.md

To Reproduce

Package a repository with symlinks, for example due to usage of workspaces. The final build will also contain symlinks inside of its node_modules/.

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