Trivial fixes to JSTypedArray

[github-actions[bot]]

Time Change: -2ms (0%)

Total Time: 16,540ms

Test name	Duration	Change
Serialization/JavaScript function call through Wasm import with int	35ms	+8ms (23%)	🚨

View Unchanged

| Test name | Duration | Change | | :--- | :---: | :---: | | Serialization/JavaScript function call through Wasm import | 54ms | +1ms | | Serialization/JavaScript function call from Swift | 233ms | +8ms (3%) | | Serialization/Swift Int to JavaScript with assignment | 507ms | +2ms (0%) | | Serialization/Swift Int to JavaScript with call | 1,510ms | -8ms (0%) | | Serialization/JavaScript Number to Swift Int | 526ms | +5ms (0%) | | Serialization/Swift String to JavaScript with assignment | 584ms | -4ms (0%) | | Serialization/Swift String to JavaScript with call | 1,601ms | +22ms (1%) | | Serialization/JavaScript String to Swift String | 6,972ms | -27ms (0%) | | Object heap/Increment and decrement RC | 4,493ms | -8ms (0%) |

View Baselines

| Test name | Duration | | :--- | :---: | | Serialization/Call JavaScript function directly | 3ms | | Serialization/Assign JavaScript number directly | 4ms | | Serialization/Call with JavaScript number directly | 4ms | | Serialization/Write JavaScript string directly | 10ms | | Serialization/Call with JavaScript string directly | 4ms |