Displace Filter lets variables through without a dimension check

[JustinPrivitera]

Description

Resolves #19719

Mili DB provides an expression called displacement. There is no way for VisIt to know the dimension of the expression until it is asked to use it. The displace operator asks for the dimension before it uses the variable, so VisIt fails to correctly identify the dimension and defaults to 1, which is wrong. If you make a vector plot of displacement before using it in the displace operator, it works fine, probably because VisIt is caching it somewhere. The solution we came up with is to ignore checks for variable dimension. Displacement should still fail if you give it something that doesn't make sense. The error message is much less informative but there is no other way to let expression variables through.

Type of change

• [x] Bug fix~~
• [ ] New feature
• [ ] Documentation update
• [ ] Other

How Has This Been Tested?

built and ran on rzhound toss4 all new and old tests pass

Reminders:

• Please follow the style guidelines of this project.
• Please perform a self-review of your code before submitting a PR and asking others to review it.
• Please assign reviewers (see VisIt's PR procedures for more information).

Checklist:

• [x] I have commented my code where applicable.~~
• [x] I have updated the release notes.~~
• [ ] I have made corresponding changes to the documentation.
• [ ] I have added debugging support to my changes.
• [x] I have added tests that prove my fix is effective or that my feature works.~~
• [x] I have confirmed new and existing unit tests pass locally with my changes.~~
• [x] I have added new baselines for any new tests to the repo.~~
• [x] I have NOT made any changes to protocol or public interfaces in an RC branch.~~

[JustinPrivitera]

merge w/ develop in #20019