Enable the `OpenExamplesFolder` unit test

[andyleejordan]

Prerequisites

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Summary

Added but also disabled in #3570:

vscode-powershell/test/core/paths.test.ts

Lines 14 to 19 in bf10916

	// TODO: This is skipped because it intereferes with other tests. Either
	// need to find a way to close the opened folder via a Code API, or find
	// another way to test this.
	test.skip("The examples folder can be opened (and exists)", async () => {
	assert(await vscode.commands.executeCommand("PowerShell.OpenExamplesFolder"));
	});

Proposed Design

No response

[andyleejordan]

I need to delete that test, it's never going to work.

[SydneyhSmith]

#4420