Fixed unhelpful upgrade message for [scheduling][dependencies]graph

[wxtim]

… foo=>bar

Closes #5810

Check List

• I have read CONTRIBUTING.md and added my name as a Code Contributor.
• Contains logically grouped changes (else tidy your branch by rebase).
• Does not contain off-topic changes (use other PRs for other changes).
• Applied any dependency changes to both setup.cfg (and conda-environment.yml if present).
• Tests are included (or explain why tests are not needed).
• CHANGES.md entry improves documentation, doesn't change functioning.
• Cylc-Doc pull request opened if required at cylc/cylc-doc/pull/XXXX.
• If this is a bug fix, PR should be raised against the relevant ?.?.x branch.

[MetRonnie]

Something's gone wrong git-wise

[wxtim]

Something's gone wrong git-wise

Rebased ... poorly

[MetRonnie]

These validation tests are getting quite fragmented. We now have

• tests/integration/test_config.py
• tests/integration/scripts/test_validate_integration.py
• tests/integration/validate/test_outputs.py
• tests/integration/test_upgrade_warning.py

All of which do pretty much the same kind of tests

[wxtim]

I'll have a look and see if I can do any rationalization in this PR, but I think that there is definately scope for keeping tight reigns on the integration tests, lest they become a sprawing mess.

[wxtim]

I've moved my new tests so that they aren't at least creating a new test file, and only modifying one test file. I think further rationalization is out of scope.

[MetRonnie]

[scheduling]
    initial cycle point = 2012
    [[dependencies]]
        graph = foo
        [[[T00]]]
            graph = bar
[runtime]
    [[foo,bar]]

$ cylc validate cylc7-simple/
WARNING - deprecated graph items were automatically upgraded in "workflow definition":
     * (8.0.0) [scheduling][dependencies]graph -> [scheduling][graph]R1

It's missing the T00 upgrade from the warning

[wxtim]

[scheduling]
    initial cycle point = 2012
    [[dependencies]]
        graph = foo
        [[[T00]]]
            graph = bar
[runtime]
    [[foo,bar]]

$ cylc validate cylc7-simple/
WARNING - deprecated graph items were automatically upgraded in "workflow definition":
     * (8.0.0) [scheduling][dependencies]graph -> [scheduling][graph]R1

It's missing the T00 upgrade from the warning

Somewhat surprised that's valid at all!

Fixed with 2d868cf

[MetRonnie]

I think this will do

[wxtim]

I think this will do

Don't get me wrong, it's wierd and complex now. I'm not thrilled. I also cannot justify spending too much time on code which I want to delete before the end of 2026.

[MetRonnie]

Kicking tests