Make `Attachment` always conform to `CustomStringConvertible`. (#1367) #9

Job	Run time
Test / Linux (nightly-main - jammy)	4m 45s
Test / Linux (nightly-main - amazonlinux2)	5m 12s
Test / macOS (Xcode 26.0 - sequoia - ARM64)	3m 9s
Test / Embedded Swift SDK for Wasm Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Test / Static Linux Swift SDK Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Test / Windows (nightly-main - windows-2022)	18m 44s
Test / Swift SDK for Wasm Build (nightly-main - amazonlinux2)	4m 50s
Test / Swift SDK for Wasm Build (nightly-6.2 - jammy)	3m 41s
Test / Swift SDK for Wasm Build (nightly-main - jammy)	3m 42s
Test / Swift SDK for Wasm Build (nightly-6.2 - amazonlinux2)	3m 50s
Test / Swift SDK for Wasm Build (6.2 - jammy)	2m 53s
Test / Swift SDK for Wasm Build (6.2 - amazonlinux2)	2m 41s
	53m 27s

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