Various fixes for CORDEX model data

[bouweandela]

Description

• Remove height coordinate from variable snw of model COSMO-crCLIM-v1-1 as it does not make sense for this variable
• Use standard long_name and standard variable names for coordinates for all variables from model HadREM3-GA7-05 because these are non standard
• Set use_standard_grid: true by default for models COSMO-crCLIM-v1-1, RACMO22E, and RCA4 because these models are missing bounds on the lat/lon coordinates. This could alternatively be solved by computing the lat/lon bounds from the rotated lat/lon bounds.
• Update the list of facets used to create the alias facet and group the datasets in the ensemble_statistics preprocessor function so they work for CORDEX data

Closes #issue_number

Link to documentation:

---

Before you get started

• ☝ Create an issue to discuss what you are going to do

Checklist

It is the responsibility of the author to make sure the pull request is ready to review. The icons indicate whether the item will be subject to the 🛠 Technical or 🧪 Scientific review.

• 🧪 The new functionality is relevant and scientifically sound
• 🛠 This pull request has a descriptive title and labels
• 🛠 Code is written according to the code quality guidelines
• 🛠 Unit tests have been added
• 🛠 Changes are backward compatible
• 🛠 The list of authors is up to date
• 🛠 All checks below this pull request were successful

---

To help with the number pull requests:

• 🙏 We kindly ask you to review two other open pull requests in this repository

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.24%. Comparing base (083c723) to head (0704d4e).

Additional details and impacted files

@@                    Coverage Diff                     @@
##           target-grid-cordex-domain    #3135   +/-   ##
==========================================================
  Coverage                      96.24%   96.24%           
==========================================================
  Files                            273      278    +5     
  Lines                          16128    16144   +16     
==========================================================
+ Hits                           15522    15538   +16     
  Misses                           606      606           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.