ci: Fix paths filter

[relrelb]

Multiple patterns on one filter uses OR - it's enough that any file is matched by at least one pattern, and the filter becomes true.
This means the previous Rust filter became true even when only Web files were modified.

Use an extended glob feature to make the patterns work like an AND.

[midgleyc]

This fixes the problem with checks running when they shouldn't.

There are still two problems with this, as you can see by the failed checks ;).

First is that we should probably have the web checks run when the web workflow gets modified (and the rust checks run when the rust workflow gets modified, which already happens), because that is a "change" to how the web build works.

Second is that the required web checks aren't marked as run, because the skipped check just looks like

Test Web / Test Node.js ${{ matrix.node_version }} / Rust ${{ matrix.rust_version }} / ${{ matrix.os }}
instead of having the full name.

There are two things I can think of doing:

• move the path filter under the build matrix, then add ifs to all remaining steps to skip them if the filters didn't match.
• create more builds with the names Test Node.js 12 / Rust stable / ubuntu-latest for each version / os combo, and run them only if the filters didn't match
• duplicate the strategy matrix, and have a second build named Test Web / Test Node.js ${{ matrix.node_version }} / Rust ${{ matrix.rust_version }} / ${{ matrix.os }} that runs only if the filters match.

The last two rely on GH requiring a build with the name Test Node.js 12 / Rust stable / ubuntu-latest to pass, so they run a separate build with the same name.

[adrian17]

FYI, Mike disabled check requirement for beta windows/mac.
Does this mean we can go back to #5103 , or are there any other leftover issues?
Edit: oh right, nvm, this doesn't really help with this at all doesn't it 😅 Sorry for confusion.