Issue created by stacks.

This stack uLUAQA was reported by telemetry:

• compile/bug
• cmd/compile/internal/base.FatalfAt:+3
• cmd/compile/internal/base.Fatalf:=195
• cmd/compile/internal/gc.handlePanic:+7
• runtime.gopanic:+50
• cmd/compile/internal/types2.(*Checker).handleBailout:+7
• runtime.gopanic:+50
• internal/pkgbits.errorf:=16
• internal/pkgbits.(*Decoder).checkErr:=245
• internal/pkgbits.(*Decoder).Bool:+3
• cmd/compile/internal/importer.(*reader).typInfo:+2
• cmd/compile/internal/importer.(*reader).typ:+1
• cmd/compile/internal/importer.(*pkgReader).objIdx.func1.1:+7
• cmd/compile/internal/types2.(*Named).resolve:+46
• cmd/compile/internal/types2.(*Named).Underlying:+2
• cmd/compile/internal/types2.(*Checker).validType0:+70
• cmd/compile/internal/types2.(*Checker).validType0:+27

cmd/compile@go1.23.2 go1.23.2 linux/amd64  (1)