dev: have required builds 'run'

[midgleyc]

Bring in the OR filtering from #5212, but have the required builds "run" (with a blank step).

[relrelb]

LGTM!

[relrelb]

Any idea why there are still the following skipped checks?

• Test Rust / Test Rust ${{ matrix.rust_version }} / ${{ matrix.os }}
• Test Web / Test Node.js ${{ matrix.node_version }} / Rust ${{ matrix.rust_version }} / ${{ matrix.os }}

Maybe that's because master has not been updated yet?

[midgleyc]

No, those are always going to exist.

There are two mutually exclusive builds: build and check-required. The one that doesn't run will display the skipped check (with the non-populated matrix versions); the one that runs should display the others.

[adrian17]

I'm still sad this stuff is way more complex than it should be, but I guess that's the way it is :(