`web3.utils.toWei(amount, ether)` fix required when decimals in input are overflown.

MRE :

```
x = "1.123456789123456789123"
const amountInWei = web3.utils.toWei(x, 'ether')

console.log(amountInWei, typeof(amountInWei))

``` 

Output: `1123456789123456789123 string` . 
This output is equivalent to `1123.456789123456789123 ether` while we provided `1.123456789123456789123` as input . 


