cmd/compile/internal/importer: TestCorrectMethodPackage failures

[gopherbot]

#!watchflakes
default <- pkg == "cmd/compile/internal/importer" && test == "TestCorrectMethodPackage"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestCorrectMethodPackage
    gcimporter_test.go:414: can't find import: "net/http": # crypto/tls
        src/syscall/ztypes_darwin_amd64.go:218:6: internal compiler error: panic: runtime error: slice bounds out of range [34804:34746]
        
        goroutine 1 [running]:
        runtime/debug.Stack()
        	runtime/debug/stack.go:26 +0x5e
        cmd/compile/internal/base.FatalfAt({0xa1164368?, 0x27a0?}, {0x11517350, 0x9}, {0x27a0a1164398, 0x1, 0x1})
        	cmd/compile/internal/base/print.go:232 +0x18b
        cmd/compile/internal/base.Fatalf(...)
...
        	cmd/compile/internal/noder/unified.go:212 +0x1f9
        cmd/compile/internal/noder.LoadPackage({0x27a09ffda408, 0x15, 0x17})
        	cmd/compile/internal/noder/noder.go:76 +0x529
        cmd/compile/internal/gc.Main(0x11f08ee0)
        	cmd/compile/internal/gc/main.go:217 +0xce5
        main.main()
        	cmd/compile/main.go:57 +0x105
        
        
--- FAIL: TestCorrectMethodPackage (1.22s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "cmd/compile/internal/importer" && test == "TestCorrectMethodPackage"

2026-05-20 20:16 gotip-darwin-amd64-race go@c0bd2704 cmd/compile/internal/importer.TestCorrectMethodPackage (log)

=== RUN   TestCorrectMethodPackage
    gcimporter_test.go:414: can't find import: "net/http": # crypto/tls
        src/syscall/ztypes_darwin_amd64.go:218:6: internal compiler error: panic: runtime error: slice bounds out of range [34804:34746]
        
        goroutine 1 [running]:
        runtime/debug.Stack()
        	runtime/debug/stack.go:26 +0x5e
        cmd/compile/internal/base.FatalfAt({0xa1164368?, 0x27a0?}, {0x11517350, 0x9}, {0x27a0a1164398, 0x1, 0x1})
        	cmd/compile/internal/base/print.go:232 +0x18b
        cmd/compile/internal/base.Fatalf(...)
...
        	cmd/compile/internal/noder/unified.go:212 +0x1f9
        cmd/compile/internal/noder.LoadPackage({0x27a09ffda408, 0x15, 0x17})
        	cmd/compile/internal/noder/noder.go:76 +0x529
        cmd/compile/internal/gc.Main(0x11f08ee0)
        	cmd/compile/internal/gc/main.go:217 +0xce5
        main.main()
        	cmd/compile/main.go:57 +0x105
        
        
--- FAIL: TestCorrectMethodPackage (1.22s)

— watchflakes

[mrkfrmn]

cc @golang/compiler