Assertion failure in BackwardPass.cpp

the following poc cause a assertion failure in "debug" build on ubuntu.

```
function v0(v1,v2) {
try {
for (let v6 = -1332925573; v6 >= 256; v6++) {
try {
} catch(v7) {
} finally {
break;
}
}
} finally {
}
}
function v8(v9,v10) {
}
const v13 = [65537,v8,65537,-2609076265];
const v16 = AggregateError("bigint");
const opt = v0;let p0 = v13;let p1 = v16;

```