compiler: support Go 1.27 generic methods via x/tools upgrade

Go 1.27 adds generic methods (golang/go#77273). golang.org/x/tools
go/ssa v0.42.0 does not instantiate them: objectMethod only applies
receiverTypeArgs and ignores method-level type parameters, so a call
such as (*math/rand/v2.Rand).N resolves to the abstract generic method
and its body reaches createConst with a type-parameter-typed zero
constant, triggering "panic: expected nil interface constant".

Upgrade golang.org/x/tools to v0.47.0, whose go/ssa returns nil from
MethodValue for generic methods and instantiates method-level type
parameters. No compiler changes are required.

Since x/tools v0.47.0 requires Go 1.25, raise the minimum supported Go
version from 1.24 to 1.25.

Signed-off-by: deadprogram <ron@hybridgroup.com>

go.mod

@@ -1,6 +1,6 @@
 module github.com/tinygo-org/tinygo
 
-go 1.24.0
+go 1.25.0
 
 require (
 	github.com/aykevl/go-wasm v0.0.2-0.20250317121156-42b86c494139
@@ -18,9 +18,9 @@ require (
 	go.bug.st/serial v1.6.4
 	go.bytecodealliance.org v0.6.2
 	go.bytecodealliance.org/cm v0.2.2
-	golang.org/x/net v0.50.0
-	golang.org/x/sys v0.41.0
-	golang.org/x/tools v0.42.0
+	golang.org/x/net v0.56.0
+	golang.org/x/sys v0.46.0
+	golang.org/x/tools v0.47.0
 	gopkg.in/yaml.v2 v2.4.0
 	tinygo.org/x/espflasher v0.6.1
 	tinygo.org/x/go-llvm v0.0.0-20260422095634-06c6725fe5e6
@@ -48,6 +48,6 @@ require (
 	github.com/spf13/afero v1.11.0 // indirect
 	github.com/ulikunitz/xz v0.5.12 // indirect
 	github.com/urfave/cli/v3 v3.0.0-beta1 // indirect
-	golang.org/x/mod v0.33.0 // indirect
-	golang.org/x/text v0.34.0 // indirect
+	golang.org/x/mod v0.37.0 // indirect
+	golang.org/x/text v0.38.0 // indirect
 )