No diff when comparing two instances of UIImage or #imageLiteral using XCTAssertNoDifference

[mikevelu]

Describe the bug

When comparing instances of UIImage or #imageLiteral XCTAssertNoDifference doesn't provide a diff, XCTAssertEqual does.

To Reproduce
testExample in ImageResourceComparisonDemoTests has some assertions which show the difference
ImageResourceComparisonDemo.zip

XCTAssertEqual(
    #imageLiteral(
        resourceName: "ExampleImage"
    ),
    #imageLiteral(
        resourceName: "ExampleImage2"
    )
)

// 👆 Produces this diff:

/**
testExample(): XCTAssertEqual failed: ("<UIImage:0x600002d50480 named(main: ExampleImage) {1200, 1200} renderingMode=automatic(original)>") is not equal to ("<UIImage:0x600002d505a0 named(main: ExampleImage2) {1200, 1200} renderingMode=automatic(original)>")
*/

XCTAssertNoDifference(
    #imageLiteral(
        resourceName: "ExampleImage"
    ),
    #imageLiteral(
        resourceName: "ExampleImage2"
    )
)

// 👆 Produces this diff:

/**
testExample(): XCTAssertNoDifference failed: …

  − UIImage()
  + UIImage()

(First: −, Second: +)
*/

Expected behavior
I'd have expected XCTAssertNoDifference to give me an indication of what the difference between the two images is, similar to what XCTAssertEqual does.

Environment

• swift-custom-dump version [0.6.1]
• Xcode [14.0.1]
• Swift [5.7]
• OS: [iOS 16.0]