Update function map with WP 7.0 updates

[thelovekesh]

Fixes #464 -> fix is moved to php-stubs/generator#45
Fixes #462

[szepeviktor]

Thank you!

Are you sure this should be implemented here not in the generator repo?

[thelovekesh]

Are you sure this should be implemented here not in the generator repo?

It could live there since it's independent of WordPress, and I tried to align the resolver with the PSR-5 draft spec. The only reason I can think of for keeping it here first is to dogfood it before moving it over. That way, if we uncover any bugs, they'll be limited to a single package instead of affecting all the stubs.

[szepeviktor]

All right!

Please implement it over there, or wait for me to boot up Codex CLI ...

[thelovekesh]

@szepeviktor I've cherry-picked the required changes to the generator PR (php-stubs/generator#45), so the scope of this PR is now limited.

The previous changes are still present in the branch history, so if you don't want to include them, please create a squashed commit.

[szepeviktor]

Thank you.