Fix expressions with constants ending in "." fail to compile

[mvandergrift]

We encountered a problem where any expression containing a constant ending in a dot followed by another value fails to compile. A simple example would be:

{
    "key1": "value1.",
    "key2": "value2"
}

This fails to compile complaining about a missing brace. Removing the "." in value1 fixes the issue.

It looks like the replaceQuotesAndCommentsInPaths function uses a regex to replace the double quotes with backticks on the JSONata path. replaceQuotesAndCommentsInPaths returns:

{
    "key1": "value1.`,
    `key2": "value2"
}

My proposed change modifies the regex to avoid this while still handling the quote replacement. I'm not 100% sure of the intent of the original code, so if I'm missing something, I'm happy to keep working on this.

[tbal999]

needs a test case