Test Cases for 'Longest Common Prefix' #6285

Bug Report for https://neetcode.io/problems/longest-common-prefix

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

Probably need another test to confirm one is actually using prefixes - made a mistake in my first submission and this passed:
class Solution:
def longestCommonPrefix(self, strs: List[str]) -> str:
prefix = strs[0]

    for s in strs:
        while prefix and prefix not in s:
            prefix = prefix[:-1]
            if len(prefix) == 0:
                return ""
    
    return prefix