Add `@_preInverseGenerics` to `Attachment: CustomStringConvertible`. #238

Job	Run time
Test / macOS (Xcode 26.0 - sequoia - ARM64)	2m 57s
Test / iOS (Build Only, Xcode 26.0 - sequoia - ARM64)	2m 59s
Test / Swift SDK for Wasm Build (nightly-main - jammy)	3m 37s
Test / Linux (nightly-main - jammy)	4m 46s
Test / Swift SDK for Wasm Build (6.2 - amazonlinux2)	2m 58s
Test / Linux (nightly-main - amazonlinux2)	5m 39s
Test / Swift SDK for Wasm Build (nightly-6.2 - amazonlinux2)	5m 24s
Test / Swift SDK for Wasm Build (nightly-main - amazonlinux2)	3m 48s
Test / Linux (nightly-6.2 - amazonlinux2)	7m 11s
Test / Swift SDK for Wasm Build (nightly-6.2 - jammy)	3m 23s
Test / Linux (nightly-6.2 - jammy)	5m 0s
Test / Windows (nightly-6.2 - windows-2022)	18m 20s
Test / Swift SDK for Wasm Build (6.2 - jammy)	2m 41s
Test / Static Linux Swift SDK Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Test / Windows (nightly-main - windows-2022)	16m 16s
Test / Swift SDK for Android Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Test / Embedded Swift SDK for Wasm Build (${{ matrix.swift_version }} - ${{ matrix.os_version }})	0s
Soundness / YAML lint check	5s
Soundness / Unacceptable language check	6s
Soundness / License headers check	7s
Soundness / Shell check	1m 0s
Soundness / Broken symlinks check	6s
Soundness / Python lint check	7s
Soundness / API breakage check	0s
Soundness / Documentation check	0s
Soundness / Format check	0s
	1h 26m 30s

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