go/packages: NeedTypes implies NeedModule

Add NeedModule to the implied LoadMode when NeedTypes is set.
(go/types.Config).GoVersion is populated from lpkg.Module.GoVersion.

Fixes golang/go#67431

Change-Id: I4bde9b1c7f7ccf68ac6fe403c36aa139f9a7aa7f
Reviewed-on: https://go-review.googlesource.com/c/tools/+/597875
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Michael Matloob <[email protected]>

Author: timothy-king

go/packages/packages.go

@@ -1499,6 +1499,10 @@ func impliedLoadMode(loadMode LoadMode) LoadMode {
 		// All these things require knowing the import graph.
 		loadMode |= NeedImports
 	}
+	if loadMode&NeedTypes != 0 {
+		// Types require the GoVersion from Module.
+		loadMode |= NeedModule
+	}
 
 	return loadMode
 }