Cannot use escape sequences in quoted keys in NBT paths

You can use all of the same rules as strings when writing a quoted key in a full NBT compound, but trying to use that same quoted key in an NBT path may fail.

Steps to Reproduce:

1. Run the command /data merge storage _ {foo:{"\u005F":1}}

   • ✅ The quoted key is correctly interpretted

2. Attempt to run the command /data get storage _ foo."\u005F" to access that value again

   • ❌ The escape sequence is not recognised in the quoted key

Expected Behaviour:

The same rules should apply to quoted keys in NBT paths as quoted keys in SNBT compounds