Wasm translator multi-value bugfix: handle branch to loop with loop params.

tests/wasm/loop-params.wat

@@ -0,0 +1,13 @@
+  (module
+    (func (export "run") (result i32)
+      (local $i i32)
+      (i32.const 0) ;; sum
+      (i32.const 10) ;; i
+      (loop $loop (param i32 i32) (result i32)
+        (local.tee $i)
+        (i32.add) ;; sum = i + sum
+        (i32.sub (local.get $i) (i32.const 1))
+        (i32.eqz (local.tee $i))
+        (if (param i32) (result i32)
+            (then)
+            (else (local.get $i) (br $loop))))))