Fix invalid emit of escaped new line character in template and literal strings

[memothelemo]

Expected code in JavaScript:

console.log("Hello\
World!")

It should display: HelloWorld!

However, in roblox-ts, it emits an unexpected Luau code provided with the playground link for both literal and template strings:
https://roblox-ts.com/playground/#code/A4JwlgdgLgFARACQKYBsUHsA6AoA6ukFAEzgEog
https://roblox-ts.com/playground/#code/A4JwlgdgLgFABgCQKYBsUHsA6AoA6ukFAEzgEog

In this PR, when rendering Luau strings, it should strip off the excess \ if the escape character of a string is \n, so it should render Luau code something like this:

print("Hello\
World")

When using template literals, it should output like this:

print(`Hello
World`)