Functions and function folders can no longer be numbers

Partner Rank: 2

Verification builds: 1.13.0.9
Regression builds: 1.13.0.5 and earlier

Summary: If any part of a function path consists entirely of a number, commands running it require quotes around the path.

Impact: This breaks existing content that used functions named this way.

Repro Steps:

1. Download and open the attached world
2. Type /function and autocomplete and run the four functions.

Expected Results: All four autocomplete normally and run properly.

Observed Results:

1. First function (152) autocompletes wrongly
2. First three functions fail to run
3. Last function runs fine

Screenshots/Videos attached: No