gopls: skip failing tests on wasm/wasip1

Add skips as appropriate to TestFreeRefs and TestDriverConformance.

Also add a skip for a preexisting failure on wasip1: golang/go#64725.

Fixes golang/go#68163
Updates golang/go#64725

Change-Id: I2827160bad6627755f213e4b8b54d53333d2d98d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/594895
Auto-Submit: Robert Findley <rfindley@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

go/loader/loader_test.go

diff --git a/go/loader/loader_test.go b/go/loader/loader_test.go
index 1e0b16e..4729ba3 100644
--- a/go/loader/loader_test.go
+++ b/go/loader/loader_test.go
@@ -118,6 +118,10 @@
 }
 
 func TestLoad_MissingInitialPackage(t *testing.T) {
+	if runtime.GOOS == "wasip1" {
+		t.Skip("Skipping due to golang/go#64725: fails with EBADF errors")
+	}
+
 	var conf loader.Config
 	conf.Import("nosuchpkg")
 	conf.Import("errors")

gopls/internal/golang/freesymbols_test.go

diff --git a/gopls/internal/golang/freesymbols_test.go b/gopls/internal/golang/freesymbols_test.go
index dd6d947..9ad8ca3 100644
--- a/gopls/internal/golang/freesymbols_test.go
+++ b/gopls/internal/golang/freesymbols_test.go
@@ -21,8 +21,8 @@
 
 // TestFreeRefs is a unit test of the free-references algorithm.
 func TestFreeRefs(t *testing.T) {
-	if runtime.GOOS == "js" {
-		t.Skip("some test imports are unsupported on js")
+	if runtime.GOOS == "js" || runtime.GOARCH == "wasm" {
+		t.Skip("some test imports are unsupported on js or wasm")
 	}
 
 	for i, test := range []struct {

internal/drivertest/driver_test.go

diff --git a/internal/drivertest/driver_test.go b/internal/drivertest/driver_test.go
index a9865d7..be5cd78 100644
--- a/internal/drivertest/driver_test.go
+++ b/internal/drivertest/driver_test.go
@@ -17,6 +17,7 @@
 	"golang.org/x/tools/internal/diff/myers"
 	"golang.org/x/tools/internal/drivertest"
 	"golang.org/x/tools/internal/packagesinternal"
+	"golang.org/x/tools/internal/testenv"
 	"golang.org/x/tools/internal/testfiles"
 	"golang.org/x/tools/txtar"
 )
@@ -28,6 +29,8 @@
 }
 
 func TestDriverConformance(t *testing.T) {
+	testenv.NeedsExec(t)
+
 	const workspace = `
 -- go.mod --
 module example.com/m