Test scope inspection and stepping after a trap.

Running test: test
Instantiating.
Calling div function.
Paused at:
--- 0 ---
Script wasm://wasm/a9a86c5e byte offset 46: Wasm opcode 0x6d (kExprI32DivS)
scope at div (0:46):
   $a: 1 (i32)
   $b: 0 (i32)
   $unused: 4711 (i32)
   $local_zero: 0 (i32)
   $local_const_11: 11 (i32)
--- 1 ---
  try {
    instance.exports.#div(1, 0, 4711);  // traps (div by zero)
  } catch (e) {

--- 2 ---
#call_div()

-------------
-> stepInto
Paused at:
--- 0 ---
  } catch (e) {
    #e.stack;  // step target of first pause
  }

--- 1 ---
#call_div()

-------------
-> resume
Paused at:
--- 0 ---
Script wasm://wasm/a9a86c5e byte offset 46: Wasm opcode 0x6d (kExprI32DivS)
scope at div (0:46):
   $a: -2147483648 (i32)
   $b: -1 (i32)
   $unused: 4711 (i32)
   $local_zero: 0 (i32)
   $local_const_11: 11 (i32)
--- 1 ---
  try {
    instance.exports.#div(0x80000000, -1, 4711);  // traps (unrepresentable)
  } catch (e) {

--- 2 ---
#call_div()

-------------
-> stepInto
Paused at:
--- 0 ---
  } catch (e) {
    #e.stack;  // step target of second pause
  }

--- 1 ---
#call_div()

-------------
-> resume
