SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
Having TextRange which is empty doesn't make any sense. So it confuses
the functions that rely on having valid range, and causes them to do
no action.
Fixes#5341
